Schema.gov.it MCP Server
OfficialIntegrates with Wikidata to find alignments and cross-references for concepts in schema.gov.it, enabling discovery of international correspondences via owl:sameAs and skos:exactMatch links.
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@Schema.gov.it MCP Serversearch concepts related to 'scuola' in the Italian catalog"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
Schema.gov.it MCP Server
Un server MCP (Model Context Protocol) avanzato per interagire semanticamente con il catalogo dati di schema.gov.it.
Questo server permette agli agenti AI (come Claude Code) di esplorare ontologie, analizzare la copertura dei dati, verificare la qualità e scoprire connessioni tra concetti in modo intelligente.
Strumenti disponibili
Il server espone 47 strumenti organizzati in 12 categorie:
1. Operazioni Base
query_sparql: Esegue una query SPARQL raw con contestosource. Default: remotoschema.gov.it; supporta anchesource="local"confile_path,contentoupload_id.source="hybrid"non e' ancora supportato per SPARQL raw.explore_catalog: Elenca i grafi e le ontologie disponibili nell'endpoint.explore_classes: Elenca le classi disponibili con conteggio istanze, con filtro opzionale.
2. Analytics Semantiche
check_coverage: Analizza la copertura di una specifica classe/proprietà, o statistiche globali.check_quality: Trova problemi di qualità (label o descrizioni mancanti).check_overlaps: Identifica sovrapposizioni (stesse label) o mapping espliciti.
3. Modello Dati (Ontologie)
list_ontologies: Elenca le ontologie disponibili (es. Città, Servizi Pubblici).explore_ontology: Mostra Classi e Proprietà definite in una specifica ontologia.
4. Vocabolari Controllati (Reference Data)
list_vocabularies: Elenca i vocabolari controllati disponibili (ConceptScheme) con conteggio istanze.browse_vocabulary: Naviga un vocabolario con paginazione ed e' il default consigliato quando conosci gia' il ConceptScheme. Supportakeywordelang.search_in_vocabulary: Cerca concetti dentro un vocabolario specifico per label; utile quando vuoi una ricerca diretta senza scorrere le pagine. Supportalang.navigate_skos_hierarchy: Naviga la gerarchiaskos:broader/skos:narrowera partire da un concetto, condirectionedepth.
5. Cataloghi e Dataset (Dati)
list_datasets: Elenca i dataset DCAT-AP_IT disponibili.explore_dataset: Mostra dettagli e distribuzioni di un dataset.preview_distribution: Scarica e mostra le prime righe di una distribuzione CSV/JSON.
Nota: questi tool restano utili, ma su schema.gov.it sono spesso secondari. Il catalogo contiene soprattutto asset semantici pubblicati come dataset DCAT-AP_IT, ad esempio ontologie, vocabolari controllati e relative distribuzioni. Per esplorare schema.gov.it conviene di norma partire da ontologie, vocabolari, classi, proprietà e query SPARQL; i tool dataset sono più indicati per cataloghi esterni o per casi DCAT-AP_IT specifici.
6. Intelligence (Avanzato)
search_concepts: Ricerca fuzzy. Trova concetti (es. "Scuola") senza conoscere l'URI esatto; spesso e' il primo passo prima diinspect_conceptoget_property_details. Supportalangper ridurre duplicati it/en.inspect_concept: Deep Dive. Ottiene in un colpo solo definizione, gerarchia, usage stats e vicini di un concetto. Supportasource="schema"(default),source="local"esource="hybrid"per usare un'ontologia locale come base con arricchimento mirato daschema.gov.it, oltre alangper filtrare le label.find_relations: Pathfinding. Scopre come due concetti sono collegati; supportamax_hopsfino a 3 con flagpaths_truncated.suggest_improvements: Euristiche per trovare anomalie strutturali nell'ontologia (classi orfane, cicli, proprietà senza dominio/range, classi molto popolose senza ConceptScheme).describe_resource: CBD. Ottiene tutte le triple di una risorsa (Concise Bounded Description).
7. Proprieta e Relazioni
list_properties: Elenca ObjectProperty e DatatypeProperty con dominio e range.get_property_details: Ottiene dettagli completi di una proprieta. Supportasource="schema"(default),source="local"esource="hybrid"; in modalita ibrida arricchisce domini/range e super-proprieta mancanti daschema.gov.it.list_instances_of_class: Elenca le istanze di una classe presente nel catalogo.find_recommended_scheme_for_property: Suggerisce il ConceptScheme più adatto per i valori controllati di una proprietà.
8. Dati Geografici (Italia)
list_municipalities: Elenca i comuni italiani con codici ISTAT e Belfiore, con filtro per nome e parametrolang.list_provinces: Elenca le province italiane con sigla automobilistica e codice metro, con parametrolang.list_identifiers: Esplora gli identificatori CLV (Codice Catastale, Sigla Automobilistica, ecc.).resolve_territorial_uri: Risolve codici territoriali italiani verso URI canonici del catalogo.
9. Endpoint SPARQL Esterni (linked data)
recommend_external_endpoints: Restituisce una short list curata di endpoint SPARQL pubblici utili da usare insieme aschema.gov.it.list_linked_endpoints: Scopre gli endpoint SPARQL collegati al catalogo viadcat:DataService.query_external_endpoint: Esegue una query SPARQL su qualsiasi endpoint HTTPS pubblico esterno. Non usarlo perschema.gov.it: in quel caso usaquery_sparql.find_external_alignments: Trova i mapping verso risorse esterne (Eurostat, DBpedia, ecc.).explore_external_endpoint: Esplora la struttura di un endpoint esterno (classi e conteggi).
10. Ontologia Locale
inspect_local_ontology: Carica e riassume un'ontologia RDF/OWL disponibile al server viafile_path, contenuto inline oupload_id. Attenzione:file_pathindica sempre un path leggibile dal server MCP, non dal laptop dell'utente.inspect_local_concept: Deep dive su una classe (locale o caricata). Tool legacy/compatibile: per i nuovi flussi puoi anche usareinspect_conceptconsource="local"osource="hybrid".inspect_local_property: Deep dive su una proprietà (locale o caricata). Tool legacy/compatibile: per i nuovi flussi puoi anche usareget_property_detailsconsource="local"osource="hybrid". Espone separatamente:assertedDomain/assertedRange(dichiarati nel file),inheritedDomain/inheritedRange(da super-proprietà viardfs:subPropertyOf+, con indicazione dell'antenato),effectiveDomain/effectiveRange(unione). Per super-proprietà non presenti nel file locale (es. l0:name, l0:description da ontologie importate), interroga automaticamente schema.gov.it come fallback. Ogni super-proprietà è marcata con sourcelocal|remote|not-found. Include nota sul limite Unicode nei nomi locali SPARQL con oxigraph.query_local_ontology: Esegue una query SPARQL SELECT su un'ontologia accessibile dal server o caricata prima viaPOST /upload. Usalo solo per query custom; per profili standard di concetti/proprieta usa i toolinspect_local_*.compare_local_with_remote: Confronta le classi/proprietà definite in un'ontologia accessibile dal server o viaupload_idcon quelle presenti in schema.gov.it — utile per scoprire cosa riusare o allineare.query_uploaded_store: Esegue query SPARQL SELECT su uno store temporaneo creato viaPOST /upload. Tool legacy: per i nuovi flussi e' preferibilequery_local_ontologyconupload_id.
11. Meta-Ottimizzazione
suggest_new_tools: Analizza i log delle query RAW e suggerisce nuovi tool specializzati in base all'utilizzo reale.analyze_usage: Analizza i log interni per identificare pattern, errori e query frequenti.
12. Open Knowledge Graphs (OKG)
Integrazione con api.openknowledgegraphs.com — catalogo di oltre 1.800 ontologie, vocabolari, tassonomie e strumenti semantici con metadati da Wikidata. Tutti i dati sono CC0, nessuna autenticazione richiesta.
list_okg_categories: Recupera a runtime le categorie tematiche disponibili nel catalogo OKG (le categorie sono scaricate dinamicamente daapi.openknowledgegraphs.come messe in cache).search_okg_resources: Cerca ontologie, vocabolari e tassonomie nel catalogo OKG per parola chiave e/o categoria tematica.find_okg_alignments: Dato un URI di schema.gov.it, trova le risorse OKG correlate: prima cerca allineamenti Wikidata già presenti nel catalogo (owl:sameAs, skos:exactMatch), poi usa il Wikidata ID come ponte verso OKG per identificare corrispondenze internazionali confermate.find_semantic_software: Cerca strumenti software semantici nel catalogo OKG (editor di ontologie, motori SPARQL, convertitori RDF, reasoner, ecc.).compare_coverage_with_okg: Gap analysis per dominio: confronta le risorse di schema.gov.it con il catalogo OKG internazionale, classificando le risorse come "coperte" (già collegate via Wikidata) o "gap" (non ancora presenti in schema.gov.it).
Related MCP server: OntoPortal MCP Server
Scelta Rapida Dei Tool
Se vuoi fare X | Tool consigliato |
Cercare un URI senza conoscerlo |
|
Profilare un concetto gia' presente in |
|
Ottenere il dump RDF grezzo di una risorsa remota |
|
Profilare una proprieta gia' presente in |
|
Fare una query custom su |
|
Fare una query custom su un endpoint SPARQL esterno |
|
Esplorare un vocabolario noto con paginazione |
|
Riassumere un'ontologia locale o caricata |
|
Profilare un concetto in un'ontologia locale/uploaded |
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Profilare una proprieta in un'ontologia locale/uploaded |
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Fare una query custom su un'ontologia locale/uploaded |
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Caricare un file che il server non puo' leggere direttamente |
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Installazione & Uso
1. Tramite Docker (Consigliato per uso remoto/condiviso)
Il server può essere eseguito come container Docker con trasporto HTTP/SSE, rendendolo accessibile via URL da qualsiasi client MCP.
Avvio rapido con Docker Compose (immagine remota da GHCR)
docker compose up -d mcpPer default, questo usa l'immagine pubblicata su ghcr.io/italia/dati-semantic-mcp:latest e la aggiorna automaticamente prima dell'avvio.
Con il file docker-compose.yaml il server sarà disponibile su http://localhost:8088/mcp. I log vengono salvati nella cartella ./logs/.
Build locale esplicita con Docker Compose
Se vuoi costruire l'immagine dal checkout locale invece di usare quella remota:
docker compose -f docker-compose.build.yaml up -d mcpAvvio con Docker
docker run -d \
--name schema-gov-it-mcp \
-p 3000:3000 \
-e MCP_TRANSPORT=sse \
-v ./logs:/app/logs \
ghcr.io/italia/dati-semantic-mcp:latestVerifica
curl http://localhost:3000/health
# {"status":"ok","service":"schema-gov-it-mcp","sessions":0}2. Tramite NPX (Senza installazione permanente)
npx schema-gov-it-mcp3. Installazione da GitHub (Senza NPM Registry)
Puoi installare globalmente direttamente dal repository:
npm install -g git+https://github.com/italia/dati-semantic-mcp.gitPoi usa schema-gov-it-mcp come comando.
4. Installazione Locale (Sviluppo)
git clone https://github.com/italia/dati-semantic-mcp.git
cd dati-semantic-mcp
npm install
npm run build # Automatico via prepare, ma puoi lanciarlo manualmente
node dist/index.jsConfigurazione Client MCP
Modalità stdio (processo locale)
Adatta per uso personale: il client lancia il server come processo figlio.
Claude Code
claude mcp add schema-gov-it -- npx -y github:italia/dati-semantic-mcpOppure aggiungi manualmente a ~/.claude.json:
{
"mcpServers": {
"schema-gov-it": {
"command": "npx",
"args": ["-y", "github:italia/dati-semantic-mcp"]
}
}
}VS Code / Cursor
In .vscode/mcp.json:
{
"servers": {
"schema-gov-it": {
"command": "npx",
"args": ["-y", "github:italia/dati-semantic-mcp"]
}
}
}Modalità HTTP/SSE (server remoto o Docker)
Adatta per ambienti condivisi, CI/CD o deployment remoto. Il server deve essere già in esecuzione (es. via Docker Compose).
Importante: in questa modalità file_path si riferisce al filesystem del server/container. Se il file RDF sta sul computer del client, il flusso corretto è POST /upload e poi uso di upload_id.
Claude Code
claude mcp add --transport http schema-gov-it http://localhost:8088/mcpOppure aggiungi manualmente a ~/.claude.json:
{
"mcpServers": {
"schema-gov-it": {
"type": "http",
"url": "http://localhost:8088/mcp"
}
}
}VS Code / Cursor
In .vscode/mcp.json:
{
"servers": {
"schema-gov-it": {
"type": "http",
"url": "http://localhost:8088/mcp"
}
}
}Upload di un file locale verso un server remoto
Quando il server gira altrove e non può leggere il file locale del client, evita di provare percorsi diversi. Carica il file una volta e riusa l'id restituito.
Questo punto è importante anche per i costi e l'affidabilità: non usare la conversazione con il modello come canale di trasporto del file, e non incollare ontologie grandi nel prompt. Il file va inviato dal client con un tool locale che spedisca i byte direttamente al server, per esempio curl, nc o un helper equivalente del client MCP.
Con curl:
curl -X POST \
-H "Content-Type: text/turtle" \
--data-binary @./mia-ontologia.ttl \
http://localhost:3000/uploadSe stai usando docker-compose.yaml, sostituisci localhost:3000 con localhost:8088.
Risposta tipica:
{"id":"9d7...","tripleCount":1234,"format":"text/turtle","endpoint":"/sparql/9d7..."}Poi usa quell'id come upload_id con inspect_local_ontology, query_local_ontology o compare_local_with_remote. L'interrogazione diretta dello store resta possibile, ma per i nuovi flussi e' preferibile query_local_ontology con upload_id:
curl --get \
--data-urlencode 'query=SELECT ?c WHERE { ?c a <http://www.w3.org/2002/07/owl#Class> } LIMIT 10' \
http://localhost:3000/sparql/9d7...Con nc:
{ printf 'POST /upload HTTP/1.1\r\nHost: localhost:3000\r\nContent-Type: text/turtle\r\nContent-Length: %s\r\n\r\n' "$(wc -c < ./mia-ontologia.ttl)"; cat ./mia-ontologia.ttl; } | nc localhost 3000Esempi di Utilizzo
Una volta configurato, puoi chiedere all'agente cose come:
"Cerca concetti relativi alla 'Sanità' e dimmi quali sono le classi principali." (Userà
search_concepts)"Analizza la classe Persona e dimmi con chi è collegata." (Userà
inspect_concept)"Controlla se ci sono sovrapposizioni tra i concetti di Luogo." (Userà
check_overlaps)"Come posso ottimizzare le mie query?" (Userà
analyze_usagesui log)"Elenca le ontologie disponibili e mostrami le classi di quella sui Servizi Pubblici." (Userà
list_ontologies+explore_ontology)"Trova i comuni della Lombardia e il loro codice Belfiore." (Userà
list_municipalities)"Consigliami alcuni endpoint SPARQL esterni da interrogare dopo schema.gov.it." (Userà
recommend_external_endpoints)"Esegui una query SPARQL su DBpedia per trovare le città italiane." (Userà
query_external_endpoint)"Dammi una panoramica dell'ontologia in
/srv/ontologie/mia-ontologia.ttl." (Useràinspect_local_ontologyconfile_path, se il file è davvero leggibile dal server)"Ho un server MCP remoto e un file TTL sul mio laptop: caricalo via
POST /uploade poi confronta le classi con schema.gov.it." (Useràupload_id+compare_local_with_remote)"Trova tutte le classi senza rdfs:label nel file che ho appena caricato via upload." (Userà
query_local_ontologyconupload_id)"Esistono vocabolari internazionali nel settore pubblico che potremmo allineare a schema.gov.it?" (Userà
search_okg_resources)"La classe Person di CPV ha equivalenti riconosciuti a livello internazionale?" (Userà
find_okg_alignments)"Quali tool open source posso usare per lavorare con SKOS e OWL?" (Userà
find_semantic_software)"Cosa manca a schema.gov.it rispetto agli standard semantici internazionali del settore pubblico?" (Userà
compare_coverage_with_okg)
Variabili d'Ambiente
Variabile | Default | Descrizione |
|
| Modalità di trasporto. Usa |
|
| Porta su cui il server HTTP si mette in ascolto (solo in modalità |
|
| Indirizzo di bind del server HTTP. Usa |
| (non impostato) | URL esterno del server, usato dal tool |
Esempi:
# Avvio locale su porta 3000 con upload abilitato
MCP_TRANSPORT=http node dist/index.js
# Porta personalizzata
MCP_TRANSPORT=http PORT=8080 node dist/index.js
# Docker con port mapping 8080→3000 (porta interna 3000, esposta 8080)
docker run -d \
-e MCP_TRANSPORT=http \
-e MCP_PUBLIC_URL=http://localhost:8080 \
-p 8080:3000 \
ghcr.io/italia/dati-semantic-mcp:latestNota upload: La porta HTTP (e di conseguenza
/upload) è disponibile solo in modalitàhttposse. In modalitàstdioil server non espone nessuna porta; per passare file RDF usa il parametrocontentdiinspect_local_ontologyper file piccoli, oppure attiva la modalità HTTP.
Note Tecniche
Endpoint Esterni: Usa
recommend_external_endpointsper una lista curata (es.lod.dati.gov.itcome possibile server SPARQL perdati.gov.it,dati.cultura.gov.it, endpoint istituzionali italiani, endpoint europei e knowledge graph pubblici) elist_linked_endpointsper scoprire quelli pubblicati nel catalogo via metadata DCAT.Riduzione Token per Query Esterne:
query_external_endpointrestituisce risultati compressi: conserva solo i valori utili, usa un formato tabellare compatto per result set più grandi e tronca risposte eccessive. Non aggiunge automaticamenteLIMIT, quindi per query esterne conviene specificarlo sempre.Compatibilità Endpoint Esterni: Per migliorare l'interoperabilità con endpoint protetti da proxy o filtri anti-bot, le query SPARQL verso server esterni vengono inviate con header HTTP più simili a quelli di un browser standard. Se un endpoint esterno rifiuta il
POSTcon403, il server riprova automaticamente inGET.Prefixes Automatici: Non serve definire
rdf:,owl:,skos:, ecc. nelle query interne. Il server li aggiunge automaticamente. Per gli endpoint esterni i prefissi non vengono iniettati di default.Compressione Token: Le liste lunghe (> 5 item) vengono restituite in formato tabellare compatto per risparmiare token.
Input Sanitizzati: Tutti i parametri utente sono sanitizzati per prevenire SPARQL injection.
Ontologia Locale: I tool del gruppo 10 (
inspect_local_ontology,inspect_local_concept,inspect_local_property,query_local_ontology,compare_local_with_remote) usano oxigraph (WASM) per caricare file RDF/OWL in memoria ed eseguire SPARQL.file_pathfunziona solo per file davvero leggibili dal processo server; non trasferisce file dal client. I file vengono cachati dopo il primo caricamento; le query successive sullo stesso file non rileggono il disco. Formati supportati:.ttl,.owl,.rdf,.nt,.jsonld.Context-aware core tools:
inspect_concept,get_property_detailsequery_sparqlaccettano orasource="schema" | "local" | "hybrid"dove applicabile.hybridoggi e' supportato solo sui tool specializzati di concetto/proprieta; perquery_sparqlraw non e' ancora disponibile un vero grafo unificato locale+remoto.Workflow Upload HTTP: usa
get_upload_instructionsquando il file sta sul client e il server non puo' leggerlo. Dopo l'upload, il flusso principale consigliato e'query_local_ontologyconupload_id;query_uploaded_storeresta un percorso legacy specifico dello store temporaneo.Open Knowledge Graphs (OKG): I tool della categoria 12 chiamano
api.openknowledgegraphs.com(REST JSON, CC0, nessuna autenticazione, timeout 10s). Le categorie tematiche vengono scaricate dinamicamente dalla root dell'API (GET /) al primo utilizzo e messe in cache in memoria per la durata della sessione; non è più necessario aggiornarle manualmente nel codice. Il toolcompare_coverage_with_okgcombina una chiamata OKG con una query SPARQL su schema.gov.it usando i Wikidata ID come chiave di collegamento.Test e CI: la CI esegue
npm run build,npm run test:httpenpm run test:mcp. I test MCP includono anche chiamate live aapi.openknowledgegraphs.com, quindi richiedono accesso di rete verso l'esterno.Logging: Tutte le chiamate vengono loggate in
logs/usage_log.jsonlper analisi e miglioramento continuo. Ogni entry include argomenti, riepilogo,source_data_metricseai_data_metrics: metriche quantitative dei dati ricevuti e del payload finale passato al modello, ad esempio numero di caratteri e, quando rilevabile, righe, colonne o numero di elementi.Trasporto: Il server supporta sia
stdio(default, per uso locale) che HTTP/SSE (viaMCP_TRANSPORT=sse, per uso remoto/Docker).
Licenza
MIT - vedi LICENSE
Available Tools
47 toolsanalyze_usageAnalyze UsageARead-only
Analyze the server's own usage logs for patterns and errors.
Args: None
Returns:
total_calls: Total number of tool invocations
tool_breakdown: Calls per tool
recent_errors: Last 5 distinct errors
last_activity: Most recent timestamp
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and destructiveHint=false, so the description adds value by detailing the return fields (total_calls, tool_breakdown, etc.). It does not contradict annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is extremely concise (three bullet points for Args and Returns) with no superfluous text. Every element serves a clear purpose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Without an output schema, the description adequately lists the return fields. It could benefit from specifying types (e.g., 'total_calls' is an integer) but is sufficient for a simple introspection tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
There are no parameters, and schema coverage is 100%. The description correctly reflects this with 'Args: None'. With zero parameters, the baseline of 4 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb 'analyze' and a precise resource 'server's own usage logs'. It clearly distinguishes from sibling tools by focusing on introspection rather than external queries or operations.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description does not explicitly state when to use this tool or mention alternatives. However, the zero parameters and self-referential nature imply it's for internal diagnostics, but no comparative guidance is provided.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
browse_vocabularyBrowse VocabularyARead-onlyIdempotent
Browse concepts in a vocabulary with pagination support.
Args:
schemeUri: URI of the ConceptScheme
limit: Items per page (default: 50)
offset: Items to skip (default: 0)
keyword: (optional) Filter by label
lang: "it" | "en" | "any" (default: "any")
Returns:
concepts: List of concepts with code and label
pagination: Total count, offset, has_more
When to use this vs X:
vs
search_in_vocabulary: this is the preferred default for exploring a known ConceptScheme because it supports pagination and optionalkeyworduse
search_in_vocabularyonly for a lightweight keyword lookup when pagination is not needed
Use for: Large vocabularies that need pagination (e.g., ICD codes, municipalities)
| Name | Required | Description | Default |
|---|---|---|---|
| lang | No | Preferred label language; "any" keeps all languages. | any |
| limit | No | ||
| offset | No | ||
| keyword | No | Optional keyword filter | |
| schemeUri | Yes | URI of the ConceptScheme |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, non-destructive, and idempotent behavior. The description adds that it supports pagination, returns a list of concepts with code and label, and gives output structure. No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with clear headers (Args, Returns, When to use, Use for). Every sentence adds value, no redundancy. Front-loaded with the core purpose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Comprehensive for a tool with 5 parameters and sibling comparison. Explains input, output, usage guidance, and use cases. No output schema, but description provides clear output structure.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 60% (3 of 5 parameters have descriptions). The description adds value for the undocumented 'limit' and 'offset' by listing defaults and purpose, and clearly explains optional parameters and language options.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Clearly states 'Browse concepts in a vocabulary with pagination support', specifying the verb 'browse' and resource 'concepts in a vocabulary'. Explicitly distinguishes from sibling 'search_in_vocabulary'.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit 'When to use this vs X' section, comparing with 'search_in_vocabulary' and stating that this is the preferred default for exploring a known ConceptScheme due to pagination support, while the alternative is for lightweight keyword lookups.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
check_coverageCheck CoverageARead-onlyIdempotent
Analyze usage coverage of a specific class or property, or get global stats.
Args:
targetUri: (optional) URI of class or property to check
Returns:
If targetUri provided: instance count and properties used
If no targetUri: top 50 types by instance count
Examples:
No args: Global coverage statistics
targetUri="http://...#Person": Coverage for Person class
How to interpret the two modes:
without
targetUri= heatmap of the catalog, useful to see which types are most used overallwith
targetUri= targeted coverage analysis for one URI
| Name | Required | Description | Default |
|---|---|---|---|
| targetUri | No | URI of class or property to check coverage for |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint. The description adds behavioral details beyond annotations, such as the return format (instance count, properties used, top 50 types) and the effect of providing/omitting targetUri. No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections (Args, Returns, Examples, How to interpret). Each sentence adds value, and the format is front-loaded with the core purpose. No redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool has only one optional parameter and no output schema, the description fully covers return values, usage scenarios, and interpretation. It is complete for an AI agent to select and invoke the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Input schema has 100% description coverage, but the description significantly adds meaning by explaining the two modes of operation with and without the parameter, including concrete examples. This goes well beyond the schema description.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Clearly states the tool analyzes usage coverage of a class/property or provides global stats, with two distinct modes. The verb+resource is specific and distinguishes from sibling tools like 'analyze_usage' through explicit mode descriptions.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit guidance on when to use each mode via examples and the 'How to interpret' section. However, it does not explicitly mention when not to use this tool or name alternatives among siblings, so it loses a point.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
check_overlapsCheck OverlapsBRead-onlyIdempotent
Identify potential overlaps (same labels) or explicit mappings.
Args:
limit: Maximum results to return (default: 50)
Returns:
List of potential overlaps with relation type:
owl:sameAs mappings
skos:exactMatch mappings
Same Label collisions
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare the tool is read-only, idempotent, and non-destructive. The description adds that it returns a list of overlaps with relation types (owl:sameAs, skos:exactMatch, Same Label), which is useful but does not disclose full behavioral traits like result limits beyond the default 50, or whether results are exhaustive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise but slightly redundant: the Returns section repeats the relation types already mentioned in the first sentence. It is front-loaded with the purpose, but the Args section is necessary. Overall, it could be more streamlined.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple read-only tool with one parameter and no output schema, the description covers purpose, parameter, and return structure. However, it lacks context about the scope of the check (e.g., entire knowledge graph vs. specific dataset) and does not explain what 'Same Label collisions' means precisely.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate. It clearly documents the single parameter 'limit' with its default value (50), adding meaning beyond the schema's type and default. However, it could be improved by noting any accepted range or behavior when omitted.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool identifies potential overlaps (same labels) or explicit mappings, using specific verbs and resources. It distinguishes its function from sibling tools like 'check_quality' or 'check_coverage' by focusing on overlaps, but does not explicitly differentiate from all siblings.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives, no prerequisites, and no exclusions. It only describes what the tool does without context for usage decisions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
check_qualityCheck QualityARead-onlyIdempotent
Verify quality issues like missing labels or descriptions.
Args:
limit: Maximum results to return (default: 50)
ontologyUri: (optional) Restrict check to resources whose URI starts with this ontology namespace. Use this to avoid false positives from resources imported from other ontologies (e.g. core ontology classes referenced as range/domain in the target ontology). Mirrors the URI prefix heuristic used by explore_ontology.
Returns:
List of resources missing rdfs:label or skos:prefLabel (checked in both default graph and all named graphs)
When to use ontologyUri:
Pass the ontology URI (from list_ontologies) when checking a specific ontology to exclude imported resources. Resources imported from another ontology (e.g. a core class used as range) are NOT a quality issue of the importing ontology — they are defined, with their labels, in the originating ontology.
Note: Checks owl:Class, owl:ObjectProperty, owl:DatatypeProperty, and skos:Concept. Label lookup spans both the default graph and all named graphs to avoid false positives caused by label triples residing in a named graph different from where the type assertion was found.
False positive filtering: Resources that have only a bare type declaration (a owl:Class with no other properties) are automatically excluded. These are typically import stubs — classes or properties referenced from another module but never developed locally. Only resources with at least one non-type triple are flagged, ensuring the report covers entities that are being actively developed but are missing editorial metadata.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | ||
| ontologyUri | No | Restrict check to resources whose URI starts with this ontology namespace (use the URI from list_ontologies). Excludes resources imported from other ontologies. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations indicate read-only, open-world, idempotent, non-destructive behavior. The description adds significant detail: specific resource types checked, label lookup across all graphs, and false positive filtering of import stubs, providing behavioral depth beyond annotations without contradiction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with sections for args, returns, when-to-use, notes, and false positive filtering. Front-loaded with purpose. While slightly lengthy, every section adds value with minimal redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a quality check tool with no output schema, the description comprehensively covers what is checked, how parameters affect results, false positive handling, and return format. It is complete enough for an AI agent to use correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 50% (ontologyUri described, limit not). The description adds: default for limit (50), detailed usage of ontologyUri to avoid false positives, and its relationship to explore_ontology. This meaningfully supplements the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it verifies quality issues like missing labels or descriptions, specifying the resource types checked (owl:Class, owl:ObjectProperty, etc.). This distinctly separates it from siblings like 'check_overlaps' or 'check_coverage'.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description includes a 'When to use ontologyUri' section with explicit guidance on when to pass the ontology URI to exclude imported resources, reducing false positives. It also explains false positive filtering. While it doesn't list alternatives explicitly, the context is clear.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
compare_coverage_with_okgCompare schema.gov.it Coverage with OKGARead-onlyIdempotent
Gap analysis: compare schema.gov.it semantic resources against the international OKG catalog for a given domain.
How it works:
Fetches OKG resources for the given category
For resources that have a Wikidata ID, queries schema.gov.it for matching owl:sameAs / skos:exactMatch links
Classifies each OKG resource as "covered" (linked in schema.gov.it) or "gap" (not linked)
Args:
category: OKG thematic category to analyze
limit: Max OKG resources to fetch (default: 50)
Returns:
summary: total, covered count, gap count, coverage percentage
covered: OKG resources already linked in schema.gov.it (with local URI and relation type)
gaps: OKG resources with no corresponding link in schema.gov.it
without_wikidata: OKG resources without a Wikidata ID (cannot be cross-referenced automatically)
Available categories: fetched dynamically from api.openknowledgegraphs.com at runtime.
Use when: Assessing which international standards are missing in schema.gov.it for a specific domain, or prioritizing new ontology and vocabulary contributions.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | Max OKG resources to fetch (default: 50) | |
| category | Yes | OKG thematic category to analyze |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint, establishing a safe, idempotent, read-only operation. The description goes further by detailing the three-step workflow, explaining that categories are fetched dynamically, and noting that resources without Wikidata IDs cannot be cross-referenced. No contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear headings: 'How it works', 'Args', 'Returns', 'Available categories', and 'Use when'. It is concise yet complete, with no unnecessary sentences.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's moderate complexity, no output schema, and two parameters, the description fully covers the return structure (summary, covered, gaps, without_wikidata), explains the dynamic nature of categories, and provides usage context. It is adequately complete for an AI agent to invoke and interpret the result.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Input schema covers both parameters with descriptions (100% coverage). The description adds value by explaining the 'limit' default (50), noting that 'category' comes from a dynamic list, and providing a 'Returns' section that clarifies the output structure. This exceeds what the schema alone provides.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'Gap analysis: compare schema.gov.it semantic resources against the international OKG catalog for a given domain.' This is a specific verb-resource combination that distinguishes the tool from siblings like 'check_coverage' or 'check_overlaps' by naming the external catalog.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The 'Use when' section provides explicit guidance: 'Assessing which international standards are missing in schema.gov.it for a specific domain, or prioritizing new ontology and vocabulary contributions.' While clear, it does not mention when not to use this tool or suggest specific alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
compare_local_with_remoteCompare Local Ontology with schema.gov.itARead-onlyIdempotent
Compare classes and/or properties defined in an ontology available on the server filesystem or through HTTP upload against schema.gov.it.
Args (provide exactly one of file_path or upload_id):
file_path: Absolute path on the MCP server filesystem. Use only if the server can really read that path.
upload_id: UUID returned by POST /upload. Use this in HTTP/remote mode when the ontology file is not present on the server.
type: What to compare — "classes" | "properties" | "all" (default: "classes")
limit: Max local items to check (default: 50)
Important for remote MCP servers:
file_path is not a transport mechanism. It works only for files visible to the server process.
If the ontology sits on the client machine, call
get_upload_instructions, execute the curl command via Bash tool (without reading the file), then use the upload_id here.Never copy ontology text into the conversation — use get_upload_instructions + Bash tool to send bytes directly.
Returns:
matched: URIs found in both local file and schema.gov.it (with Italian label if available)
local_only: URIs defined locally but absent from schema.gov.it
summary counts
Use when: Starting to build an ontology — quickly discover which of your classes/properties already exist in schema.gov.it so you can reuse or align them.
| Name | Required | Description | Default |
|---|---|---|---|
| type | No | What to compare | classes |
| limit | No | Max local items to check remotely | |
| file_path | No | Absolute path to the local ontology file (local/Docker) | |
| upload_id | No | Upload UUID returned by POST /upload (HTTP mode) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already mark it as read-only, idempotent, non-destructive. Description adds behavioral details: input methods (file_path vs upload_id), limitations of file_path for remote servers, and return structure (matched, local_only, summary).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections (args, important notes, returns, usage hint). It is concise yet thorough, front-loading the main purpose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity (4 params, no output schema, comparative logic), the description covers all necessary aspects: input, behavior, return values, and usage context. No gaps remain.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, but description adds value by explaining the requirement to provide exactly one of file_path or upload_id, defining the type enum, and detailing the limit parameter. This goes beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it compares classes and/or properties from a local ontology against schema.gov.it, using specific verbs and resources. It distinguishes itself from siblings by focusing on alignment with schema.gov.it.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly says when to use (starting to build an ontology) and provides alternatives (use get_upload_instructions + Bash if file is not on server). Also warns against incorrect usage of file_path.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
describe_resourceDescribe ResourceARead-onlyIdempotent
Get all triples for a resource (Concise Bounded Description).
Args:
uri: URI of the resource
depth: 1 for direct properties only, 2 to include linked resources (default: 1)
Returns:
All properties and values of the resource
When to use this vs X:
vs
inspect_concept: use this when you need the raw RDF description of a resource; useinspect_conceptwhen you want a semantic profile with hierarchy, usage, and inherited propertiesvs
query_sparql: use this for the standard CBD dump of one resource; usequery_sparqlonly for custom graph patterns not covered here
Use when: You need the complete RDF description of a specific resource.
| Name | Required | Description | Default |
|---|---|---|---|
| uri | Yes | URI of the resource | |
| depth | No | 1 for direct, 2 for linked resources |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint. Description adds value by explaining the return type ('All properties and values') and depth behavior, but does not disclose authorization or rate limits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Highly concise and well-structured: brief intro, clear args/returns sections, bulleted usage guidance. No unnecessary sentences; every sentence adds value.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given 2 parameters, rich annotations, and no output schema, the description covers purpose, parameters, return info, and usage guidance. It adequately addresses the tool's scope and context among 40+ siblings.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so baseline is 3. Description repeats the parameter info from the schema in 'Args' without adding new meaning beyond default value for depth.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description states 'Get all triples for a resource (Concise Bounded Description)', providing a specific verb and resource type. It clearly distinguishes from siblings like inspect_concept and query_sparql in the 'When to use' section.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly includes a 'When to use this vs X' section with two alternatives, stating conditions for each. Also adds a 'Use when' line, providing clear context for tool selection.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
explore_catalogExplore CatalogARead-onlyIdempotent
List named graphs and ontologies available in the endpoint.
Args: None
Returns:
graphs: List of named graphs in the endpoint
ontologies: List of owl:Ontology and skos:ConceptScheme resources
When to use this vs X:
use this for a quick structural overview of the endpoint
use
list_ontologiesorlist_vocabularieswhen you want richer, more task-oriented views of ontologies or vocabularies
Note: This tool returns TWO lists in one call (named graphs + ontology/vocabulary resources). Both queries run in parallel for performance.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint. The description adds useful context about parallel query execution and the dual-list return, which goes beyond the annotations without contradicting them.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with separate sections for Args, Returns, When to use, and a Note. Each sentence serves a purpose, no fluff, and information is front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description fully explains the return value (two lists: graphs and ontologies) and adds context about parallel execution. It covers all necessary information for an agent to understand the tool's behavior and output.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has no parameters, and the schema coverage is 100% (empty). The description explicitly states 'Args: None', which is clear but slightly redundant. With no parameters, the baseline is 4, and the description adequately conveys the lack of inputs.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool lists named graphs and ontologies in the endpoint. It uses the specific verb 'list' and identifies the resources, distinguishing it from siblings like list_ontologies and list_vocabularies by emphasizing a quick structural overview.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicit guidance is provided: use this for a quick structural overview, and use list_ontologies or list_vocabularies for richer views. The Note also mentions parallel execution, providing context for performance considerations.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
explore_classesExplore ClassesARead-onlyIdempotent
List available classes in the ontology with instance counts.
Args:
limit: Maximum number of classes to return (default: 50)
filter: Optional regex filter for class URI (case-insensitive)
Returns:
List of classes with instance counts, ordered by count descending
Examples:
No args: Returns top 50 classes by instance count
filter="Person": Returns classes containing "Person" in URI
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | ||
| filter | No | Optional text filter for class URI |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description fully discloses behavior beyond annotations: results are ordered by count descending, filter is regex case-insensitive, and limit defaults to 50. Annotations already indicate safe, read-only operation, so no contradiction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections (Args, Returns, Examples) and a front-loaded purpose sentence. Every sentence adds value, and there is no redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given two parameters and no output schema, the description fully explains input semantics, return format, and provides examples. No gaps in understanding for an AI agent.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 50% (filter has description in schema, limit has none). The description adds meaning: filter is regex case-insensitive, limit is maximum with default 50. Examples clarify usage. Slight deduction as filter could be more explicitly tied to URI.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool lists available classes in the ontology with instance counts, using a specific verb and resource. It distinguishes from siblings like explore_ontology or search_concepts by emphasizing instance counts and ordering.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides clear context for when to use (listing classes with counts) but does not explicitly mention when not to use or offer alternatives among siblings. However, the specificity is sufficient.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
explore_datasetExplore DatasetARead-onlyIdempotent
Get details of a specific Dataset including metadata and distributions.
Use this for targeted DCAT-AP_IT inspection. On schema.gov.it, many datasets describe semantic assets, so this tool is usually secondary to ontology, vocabulary, class/property, and SPARQL exploration.
Args:
datasetUri: URI of the dataset to explore
Returns:
metadata: Dataset properties (literals and distribution references)
distributions: List of distributions with format and download URLs
Note: Both queries run in parallel for performance.
| Name | Required | Description | Default |
|---|---|---|---|
| datasetUri | Yes | The URI of the Dataset |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, destructiveHint=false, and the description adds behavioral context: 'Both queries run in parallel for performance.' No contradiction. However, it doesn't mention any potential side effects or prerequisites, but the safety profile is clear from annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise and well-structured: a one-sentence summary, a brief contextual note, and a clear Args/Returns/Note section. Every sentence adds value, and the most important information is front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With only one parameter, clear annotations, and no output schema, the description is complete. It explains what the tool does, what arguments it takes, what it returns (metadata and distributions), and includes a performance note. No gaps.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The sole parameter 'datasetUri' has a schema description 'The URI of the Dataset'. The description adds 'URI of the dataset to explore,' which is essentially a restatement. Since schema coverage is 100%, baseline is 3. The description does not provide examples, format constraints, or additional context beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'Get details of a specific Dataset including metadata and distributions.' It uses a specific verb ('Get details') and identifies the resource ('Dataset'). It also distinguishes this tool from siblings by noting it is for targeted DCAT-AP_IT inspection and usually secondary to other exploration tools.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states 'Use this for targeted DCAT-AP_IT inspection' and provides clear guidance on when not to use it: 'On schema.gov.it, many datasets describe semantic assets, so this tool is usually secondary to ontology, vocabulary, class/property, and SPARQL exploration.' This gives a clear context and alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
explore_external_endpointExplore External SPARQL EndpointARead-only
Explore the structure of an external SPARQL endpoint: discover its main classes and instance counts.
Args:
endpointUrl: URL of the SPARQL endpoint to explore (must be HTTPS)
limit: Maximum number of classes to return (default: 20)
Returns:
List of classes with instance counts, ordered by count descending
Security: Only HTTPS endpoints are allowed. Requests timeout after 15 seconds.
Use when: Getting a quick overview of what data an external endpoint contains before writing detailed queries.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | Maximum number of classes to return | |
| endpointUrl | Yes | URL of the SPARQL endpoint to explore (HTTPS required) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate readOnlyHint=true, but the description adds security details (HTTPS only, 15s timeout), which are behavioral traits beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Very concise: four sentences plus bullet-pointed Args and Returns. No wasted words, front-loaded with purpose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers purpose, usage context, security, and return format (ordered list with counts). Lacks error handling description, but adequate for a quick overview tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema has 100% coverage with descriptions for each parameter; description repeats this info without adding new semantics beyond what schema provides.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool explores an external SPARQL endpoint to discover main classes and instance counts, and the 'Use when' context distinguishes it from siblings like query_sparql.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicit 'Use when' section provides context for when to use (quick overview before detailed queries), but does not explicitly mention when not to use or name alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
explore_ontologyExplore OntologyARead-onlyIdempotent
List Classes and Properties defined in a specific Ontology.
Args:
ontologyUri: URI of the ontology (from list_ontologies)
Returns:
List of classes and properties with labels, grouped by type
Note: Uses URI prefix heuristic - items whose URI starts with the ontology URI.
| Name | Required | Description | Default |
|---|---|---|---|
| ontologyUri | Yes | The URI of the Ontology (from list_ontologies) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already mark read-only/idempotent, and description adds the URI prefix heuristic and return structure, enhancing transparency beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Extremely concise with bulleted args and returns; every sentence adds value with no redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Adequately covers purpose, usage, return, and a heuristic for a single-parameter tool, though it could mention when to use more specific siblings.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema covers 100% of parameters, but description adds the heuristic note and clarifies the return grouping, adding value beyond schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Clearly states the tool lists classes and properties from a specific ontology, distinguishing it from siblings like explore_classes or list_properties.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Indicates the ontologyUri comes from list_ontologies, implying a prerequisite, but does not explicitly state when to use alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
find_external_alignmentsFind External AlignmentsARead-onlyIdempotent
Find all alignment links from a concept in schema.gov.it toward external resources.
Args:
uri: URI of the concept in schema.gov.it
Returns:
concept: The queried URI
alignments: List of external URIs with relation type and domain (base URL)
Alignment types searched:
owl:sameAs (bidirectional)
skos:exactMatch
skos:closeMatch
skos:broadMatch
skos:narrowMatch
Use when: Understanding how a local concept maps to external systems (Eurostat, DBpedia, EU Publications Office, etc.)
| Name | Required | Description | Default |
|---|---|---|---|
| uri | Yes | URI of the concept in schema.gov.it |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and description confirms 'Find' (read operation). Additionally, description lists specific alignment types searched (owl:sameAs, skos:exactMatch, etc.), adding context beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with Args and Returns sections, plus a usage line. Sentences are concise and front-loaded with the core purpose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple read-only query tool with one parameter and no output schema, the description fully covers purpose, parameters, return fields, and use case. No gaps.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% (one parameter 'uri' with description 'URI of the concept in schema.gov.it'). Description repeats this without adding new meaning, so baseline 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states 'Find all alignment links from a concept in schema.gov.it toward external resources.' This is a specific verb (Find) and resource (alignment links), clearly distinguishing it from siblings like find_okg_alignments (OKG-specific) and others.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The 'Use when' section explicitly states: 'Understanding how a local concept maps to external systems (Eurostat, DBpedia, EU Publications Office, etc.)' This provides clear context, though it doesn't mention when not to use.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
find_okg_alignmentsFind OKG Alignments for a schema.gov.it ResourceARead-onlyIdempotent
Given a schema.gov.it URI, find related resources in the Open Knowledge Graphs catalog.
How it works (3 steps):
Queries schema.gov.it for the resource's label and any Wikidata alignments (owl:sameAs, skos:exactMatch)
Searches OKG using the resource label
Cross-references OKG results: those whose wikidataId matches a known alignment are "confirmed matches"; the rest are "candidates" (label-based, need manual review)
Args:
uri: URI of a schema.gov.it concept, class, or vocabulary
Returns:
label: The label used for OKG search
wikidata_alignments: Wikidata URIs already present in schema.gov.it for this resource
okg_matches: OKG resources with a confirmed Wikidata alignment (high confidence)
okg_candidates: OKG resources found by label search only (lower confidence)
Use when: Discovering international equivalents of a local ontology or vocabulary, or checking whether a schema.gov.it concept is represented in global semantic standards.
| Name | Required | Description | Default |
|---|---|---|---|
| uri | Yes | URI of a schema.gov.it resource |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations (readOnlyHint, idempotentHint, destructiveHint) already cover safety. The description adds valuable behavioral details: the three-step process, how matches are classified (confirmed vs candidates), and how cross-referencing works. No contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with numbered steps, separate sections for args and returns, and a 'Use when' clause. Every sentence is concise and informative, with no fluff.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the simple input (one param), clear annotations, and no output schema, the description fully explains the process, return fields, and confidence levels. The agent has all necessary information to use the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The single parameter 'uri' is fully described in both the schema and the description as 'URI of a schema.gov.it resource'. Schema coverage is 100%, so the description's additional mention of 'concept, class, or vocabulary' adds useful specificity.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: given a schema.gov.it URI, find related resources in the Open Knowledge Graphs catalog. It uses a specific verb 'find' and resource 'OKG alignments', distinguishing it from sibling tools like search_okg_resources or find_external_alignments.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description includes a 'Use when' section that explicitly advises discovering international equivalents or checking representation in global standards. While it does not list counterexamples, the context strongly implies appropriate usage.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
find_recommended_scheme_for_propertyFind Recommended Scheme for PropertyARead-onlyIdempotent
Given a property URI, find its range class and any associated SKOS ConceptSchemes in the catalog.
Args:
property_uri: URI of the property (e.g. 'https://w3id.org/italia/onto/COV/hasCategory')
Returns:
range: the rdfs:range of the property (if declared)
instance_count: number of instances of the range type in the catalog
schemes: SKOS ConceptSchemes whose members are typed as the range class
suggestion: actionable advice (use existing scheme, or create a local one)
Use when: You want to know what controlled vocabulary values to use for a property, or whether an official ConceptScheme exists.
| Name | Required | Description | Default |
|---|---|---|---|
| property_uri | Yes | URI of the property to analyze |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare the tool as read-only, idempotent, and non-destructive. The description adds significant context about return fields (range, instance_count, schemes, suggestion) and mentions 'actionable advice', which goes beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise with clear sections (Args, Returns, Use when). Every sentence adds value, no redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description covers return fields well. It could be slightly more explicit about when not to use, but overall sufficient for an agent to invoke correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The single parameter is fully documented in the schema, but the description adds a concrete example URI and explains its purpose ('URI of the property to analyze'), providing meaning beyond the schema type.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb ('find') and resource ('range class and associated SKOS ConceptSchemes'). It clearly distinguishes from many sibling tools focused on searching, browsing, or inspecting resources.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explicitly states when to use the tool (to find controlled vocabulary values or official ConceptSchemes). It lacks explicit alternatives or when-not-to-use, but the guidance is clear and actionable.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
find_relationsFind RelationsARead-onlyIdempotent
Find how two concepts are connected.
Args:
sourceUri: URI of the source concept
targetUri: URI of the target concept
max_hops: 1 | 2 | 3 (default: 1)
Returns:
Direct connections (single predicate)
Multi-hop paths up to the configured depth
| Name | Required | Description | Default |
|---|---|---|---|
| max_hops | No | Maximum number of intermediate nodes to traverse. 1 preserves the previous behaviour. | |
| sourceUri | Yes | URI of the source concept | |
| targetUri | Yes | URI of the target concept |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate read-only, idempotent, and non-destructive behavior. The description adds valuable context about the depth parameter and return types (direct connections vs. multi-hop paths), beyond what annotations provide. However, it does not mention authentication or rate limits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise and well-structured with an introductory sentence, clear 'Args' and 'Returns' sections, and no redundant information. Every sentence is informative.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity, the description covers the purpose, parameters, and return types. However, it could be more explicit about the exact return format (e.g., JSON structure) since there is no output schema.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with descriptions for all parameters. The description adds value by explaining max_hops options (1|2|3, default 1) and noting that '1 preserves previous behaviour,' which clarifies the schema's const values.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'Find how two concepts are connected' with specific arguments and return types. It is distinctive among siblings but does not explicitly differentiate itself from similar tools like search_concepts or check_overlaps.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage by explaining inputs and outputs, but it does not explicitly state when to use this tool versus alternatives or when not to use it. No guidance on preconditions or exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
find_semantic_softwareFind Semantic Software Tools (OKG)ARead-onlyIdempotent
Search the Open Knowledge Graphs catalog for semantic web software tools.
OKG indexes semantic tools such as ontology editors, SPARQL engines, vocabulary managers, RDF converters, and reasoning engines — with version and release metadata. Data is CC0.
Args:
query: Search term (e.g. "SPARQL", "ontology editor", "SKOS", "RDF converter", "reasoner")
limit: Maximum results (default: 10)
Returns:
List of tools with title, description, latestVersion, releaseDate, homepage, licenses
Use when: Looking for open-source tools to validate ontologies, work with SKOS/OWL/RDF data, or build semantic applications on top of schema.gov.it content.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | Maximum number of results (default: 10) | |
| query | Yes | Search term for semantic software tools |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and openWorldHint, so the description's role is reduced. The description adds that data is CC0 and specifies return fields, which is useful but not critical. No contradictions with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise, well-organized with clear sections, and every sentence adds value. No redundant or verbose phrasing.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a search tool with only 2 simple parameters and no output schema, the description adequately covers usage, examples, and return structure. It could mention pagination or error behavior, but the current level is sufficient for this complexity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so parameters are fully documented. The description repeats the parameter names and adds example values for 'query', but does not provide additional syntactic or behavioral details beyond the schema. Baseline score of 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description explicitly states it searches the OKG catalog for semantic web software tools, listing concrete examples like ontology editors and SPARQL engines. This clearly defines the resource and action, distinguishing it from sibling tools like 'search_okg_resources' or 'list_okg_categories'.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The 'Use when' section provides specific scenarios (e.g., validating ontologies, working with RDF data). However, it lacks explicit guidance on when not to use this tool or mention of alternatives (e.g., 'search_okg_resources' for broader searches), which would improve decision-making.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_property_detailsGet Property DetailsARead-onlyIdempotent
Get comprehensive details of a specific property from schema.gov.it, with explicit raw vs effective views.
Args:
propertyUri: URI of the property
mode: "raw" | "effective" (default: "effective")
source: "schema" | "local" | "hybrid" (default: "schema")
file_path / content / upload_id: local context when source="local" or source="hybrid"
Tip: Use search_concepts first if you do not know the URI.
mode: "raw" — only explicitly asserted triples:
definition: type, label, comment, rdfs:domain, rdfs:range, rdfs:subPropertyOf, owl:inverseOf, functional flags
mode: "effective" (default) — full inherited view, adds:
assertedDomain: rdfs:domain declared directly on this property
assertedRange: rdfs:range declared directly on this property
superproperties: ancestor chain via rdfs:subPropertyOf+, each with hasDomainLocally / hasRangeLocally flags
inheritedDomain: domain values from super-properties, each annotated with ancestor URI and label
inheritedRange: range values from super-properties, each annotated with ancestor URI and label
effectiveDomain: deduplicated union of assertedDomain + inheritedDomain
effectiveRange: deduplicated union of assertedRange + inheritedRange
redundancy_analysis: diagnostic view of each asserted value:
"redundant": identical to an inherited value — the axiom can be dropped without semantic loss
"specialization": a rdfs:subClassOf of an inherited value — genuinely narrows the domain/range
"new": not present in any inherited value — adds information not implied by the super-property chain
summary counts per category for quick overview
Interpreting the output:
If assertedDomain is empty but effectiveDomain is not → domain is inherited; no need to re-assert it on this property
If assertedDomain equals effectiveDomain → the domain is fully explicit, not relying on inheritance
Use redundancy_analysis.summary to immediately see if the local TTL has redundant axioms or genuine specializations
owl:equivalentProperty and owl:equivalentClass expansions are not included (use query_sparql for those)
Hybrid mode:
source="hybrid" uses the local/uploaded ontology as the base graph
it enriches missing super-property semantics from schema.gov.it when a super-property URI is known locally but absent from the local store
it still does not build a generic unified graph or guarantee full owl:imports resolution
When to use this vs X:
vs
inspect_local_property: use this for a property already published inschema.gov.it; useinspect_local_propertyfor a local/uploaded ontologyvs
query_sparql: use this for the standard semantic profile of one property; usequery_sparqlonly for custom questions not covered here
| Name | Required | Description | Default |
|---|---|---|---|
| mode | No | "raw": only asserted triples. "effective" (default): adds assertedDomain/Range, super-property chain, inheritedDomain/Range, effectiveDomain/Range. | effective |
| format | No | RDF content type for inline content | |
| source | No | Execution context: "schema" for schema.gov.it, "local" for a local/uploaded ontology, "hybrid" for local base + schema.gov.it enrichment. | schema |
| content | No | Inline RDF content when source='local' or 'hybrid' | |
| file_path | No | Absolute path to a local ontology file when source='local' or 'hybrid' | |
| upload_id | No | Uploaded ontology store ID when source='local' or 'hybrid' | |
| propertyUri | Yes | URI of the property to inspect |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already provide readOnlyHint, openWorldHint, idempotentHint, and destructiveHint. The description adds extensive behavioral context: mode differences, inheritance details, redundancy analysis, hybrid mode behavior, and what is not included (owl:equivalentProperty expansions).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is lengthy but well-structured with clear sections (Args, Tip, mode details, interpretation, hybrid mode, when to use). It front-loads core information and each section earns its place, though could be slightly more concise.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (7 parameters, no output schema), the description is remarkably complete. It explains output interpretation, redundancy analysis, hybrid mode behavior, and limitations, leaving little ambiguity for an AI agent.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% description coverage. The description enriches each parameter with detailed explanations of enum values (e.g., mode 'raw' vs 'effective', source 'schema' vs 'local' vs 'hybrid') and the local context parameters, adding significant meaning beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it retrieves comprehensive details of a specific property from schema.gov.it, with explicit raw vs effective views. It also distinguishes itself from sibling tools like inspect_local_property and query_sparql in the 'When to use this vs X' section.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Includes a tip to use search_concepts first if the URI is unknown, and explicitly contrasts with inspect_local_property and query_sparql, providing clear when-to-use guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_upload_instructionsGet Upload Instructions for Local OntologyARead-onlyIdempotent
Returns the exact curl command to upload a local RDF file to this MCP server and get back an upload_id — without the AI ever reading the file content.
CRITICAL — how to use this tool:
Call this tool with the local file path
Execute the returned
curl_commandvia the Bash tool (do NOT read the file first, do NOT pass its content through the conversation)Parse the
idfield from the curl JSON outputPass the id as
upload_idtoinspect_local_ontology,query_local_ontology,compare_local_with_remote, orquery_uploaded_store
Why this matters: Reading the file and sending its content through the AI conversation wastes tokens and may hit context limits. curl sends the raw bytes directly from the filesystem to the server — the AI never sees the content.
When to use this vs X:
use this only when the file is on the client machine and the MCP server cannot read it directly
if the server can already read the file, prefer
file_pathon the local ontology toolsif the file is small and you only need a quick summary,
inspect_local_ontologywithcontent + formatmay be enough
HTTP mode only: This workflow requires the MCP server to be running in HTTP mode (MCP_TRANSPORT=http). In stdio mode the HTTP endpoint is not available; use the content parameter of inspect_local_ontology for small files instead.
Docker / reverse-proxy: Set the MCP_PUBLIC_URL env var to the externally reachable base URL (e.g. http://localhost:8080). Without it, the tool falls back to the internal bind address which may be unreachable from outside the container.
Supported formats: .ttl (Turtle), .owl/.rdf (RDF/XML), .nt (N-Triples), .jsonld (JSON-LD), .graphol (Graphol XML)
Uploaded stores expire after 1 hour.
| Name | Required | Description | Default |
|---|---|---|---|
| file_path | Yes | Absolute path to the local RDF file to upload |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations indicate read-only and idempotent; description adds context about not reading file content, one-hour expiration, and HTTP mode requirement, with no contradiction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with headings and lists, but lengthy; every sentence is meaningful given workflow complexity.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers all aspects: return value, workflow steps, prerequisites, format support, and expiration, despite no output schema.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
One parameter with 100% schema coverage; description adds usage context but no new semantic meaning beyond schema definition.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states it returns a curl command to upload a local RDF file, distinguishing it from sibling tools that use upload_id or file_path directly.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides step-by-step instructions, when to use vs alternatives (e.g., server-read file, small file), and prerequisites like HTTP mode and Docker setup.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
inspect_conceptInspect ConceptARead-onlyIdempotent
Get a comprehensive profile of a concept from schema.gov.it, with explicit raw vs effective views.
Args:
uri: URI of the concept to inspect
mode: "raw" | "effective" (default: "effective")
source: "schema" | "local" | "hybrid" (default: "schema")
file_path / content / upload_id: local context when source="local" or source="hybrid"
lang: "it" | "en" | "any" (default: "any")
Tip: Use search_concepts first if you do not know the URI.
mode: "raw" — only explicitly asserted triples:
definition: literal annotations (label, comment, definition…)
hierarchy: direct type, parent classes (rdfs:subClassOf / skos:broader), child classes
usage: instance count
own_properties: properties with rdfs:domain exactly this class
mode: "effective" (default) — full OWL/RDFS-implied view, adds:
inherited_properties: properties from ancestor classes via rdfs:subClassOf+/skos:broader+, each row annotated with the ancestor that declares domain (distinguishes asserted-on-this-class from inherited)
incoming: properties pointing to instances of this type (data-level)
outgoing: properties used by instances of this type (data-level)
Interpreting own vs inherited:
own_properties = rdfs:domain written explicitly for this class → if missing, the property may still apply via inheritance
inherited_properties = rdfs:domain written on an ancestor → redundant to re-assert on this class unless restricting range
A property absent from both may still apply via owl:restriction, owl:equivalentClass, or owl:unionOf/intersectionOf (not shown — use query_sparql for those cases)
Limitations of effective mode:
owl:equivalentClass: not expanded (equivalent classes share all properties but this tool shows only the rdfs:subClassOf chain)
owl:unionOf / owl:intersectionOf: not traversed (anonymous class expressions)
owl:imports: schema.gov.it resolves these server-side; the endpoint already includes imported triples
Hybrid mode:
source="hybrid" uses the local/uploaded ontology as the base graph
for effective mode it enriches missing inherited properties and labels from schema.gov.it when ancestor URIs are known locally
it does not create a fully unified graph and does not resolve arbitrary owl:imports chains
When to use this vs X:
vs
inspect_local_concept: use this for concepts already in the remoteschema.gov.itcatalog; useinspect_local_conceptfor a local/uploaded ontologyvs
describe_resource: use this for a semantic profile (hierarchy, inherited properties, usage); usedescribe_resourcefor the raw RDF dump of a resourcevs
query_sparql: use this when you want the standard profile of one concept; usequery_sparqlonly for custom questions not covered here
All queries run in parallel for performance.
| Name | Required | Description | Default |
|---|---|---|---|
| uri | Yes | The URI of the concept to inspect | |
| lang | No | Preferred label language; "any" keeps all languages. | any |
| mode | No | "raw": only asserted triples (own_properties, no ancestor traversal). "effective" (default): adds inherited_properties via rdfs:subClassOf+/skos:broader+ and data-level incoming/outgoing. | effective |
| format | No | RDF content type for inline content | |
| source | No | Execution context: "schema" for schema.gov.it, "local" for a local/uploaded ontology, "hybrid" for local base + schema.gov.it enrichment. | schema |
| content | No | Inline RDF content when source='local' or 'hybrid' | |
| file_path | No | Absolute path to a local ontology file when source='local' or 'hybrid' | |
| upload_id | No | Uploaded ontology store ID when source='local' or 'hybrid' |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description goes far beyond the annotations (readOnlyHint, openWorldHint, idempotentHint, destructiveHint) by detailing the exact behavior of each mode, including limitations of effective mode (owl:equivalentClass, owl:unionOf, owl:imports not expanded), hybrid mode details, and interpretation of own vs inherited properties. There is no contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear headings, bullet points for args and mode details, and a concise 'When to use this vs X' section. Despite its length, every sentence provides necessary information, and the structure allows for easy scanning. It is front-loaded with the core purpose and immediately useful details.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity of the tool (8 parameters, 3 enums, no output schema), the description covers all relevant aspects: parameter behavior, return structure (including differentiation of sections for each mode), limitations, and comparative guidance. The inclusion of interpretation details and performance notes ('All queries run in parallel') adds completeness.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
With 100% schema coverage, the description adds significant meaning beyond the schema by explaining the semantics of each parameter. For example, it elaborates on the 'mode' parameter ('raw' vs 'effective') with detailed sub-sections, explains how 'source' modes interact, and provides tips for interpreting 'own_properties' and 'inherited_properties'. The lang parameter is also clarified.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Get a comprehensive profile of a concept from schema.gov.it, with explicit raw vs effective views.' It distinguishes between modes and explicitly contrasts with sibling tools like inspect_local_concept, describe_resource, and query_sparql in the 'When to use this vs X' section, ensuring the agent knows exactly what this tool does and how it differs.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit when-to-use and when-not-to-use guidance. It includes a dedicated 'When to use this vs X' section that compares with three sibling tools, stating clear conditions for each. Additionally, it gives a tip to use search_concepts first if the URI is unknown, providing practical usage context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
inspect_local_conceptInspect Concept in Local / Uploaded OntologyARead-onlyIdempotent
Get a full profile of a class or concept from a local or uploaded ontology.
CRITICAL — file access workflow:
Try
file_pathfirst (works only if the file is readable by the MCP server process).If file_path fails for any reason → call
get_upload_instructionswith the local path, execute the returned curl command via Bash tool, parse theidfrom the JSON response, then call this tool again withupload_id.NEVER read the file content and pass it through the conversation. NEVER attempt to parse or analyse the TTL text manually. The upload workflow sends raw bytes directly from disk to server without the AI ever seeing the content — it is always faster, cheaper, and more reliable.
Quale modalita di input usare:
stdio / stessa macchina →
file_pathserver remoto, file grande →
get_upload_instructions+upload_idserver remoto, file piccolo (<1 MB) → valuta
content + formatconinspect_local_ontology, poi passa a upload se servono query ripetute
Args:
uri: URI of the class/concept to inspect
file_path / upload_id: exactly one (see workflow above)
mode: "raw" | "effective" (default: "effective")
Tip: Use search_concepts first if you are checking whether a similar concept already exists in schema.gov.it. Use this tool only after you know you want to inspect the local/uploaded ontology.
mode: "raw" — only triples explicitly present in the local file:
definition, hierarchy, usage, own_properties (rdfs:domain asserted directly on this class)
No ancestor traversal, no incoming/outgoing
mode: "effective" (default) — full OWL/RDFS-implied view:
All raw sections, plus:
inherited_properties: properties from superclasses via rdfs:subClassOf+/skos:broader+, each annotated with the ancestor that declares them
incoming / outgoing: data-level relations via instances
Distinguishing own vs inherited:
own_properties = rdfs:domain explicitly written as this class in the local file
inherited_properties = rdfs:domain written on an ancestor class (traversed via property paths)
Properties applicable only via owl:restriction or anonymous class expressions are NOT shown — use query_local_ontology for those
Limitation with owl:imports: inherited_properties traverses only superclasses present in the local file. Classes from imported external ontologies (e.g. l0:, COV:, CPV:) are absent from the local store unless the file includes them. For complete property semantics of a property that subPropertyOf an external one, use inspect_local_property instead — it falls back to schema.gov.it for missing super-properties.
When to use this vs X:
vs
inspect_concept: use this for a local or uploaded ontology; useinspect_conceptfor the remoteschema.gov.itcatalogvs
query_local_ontology: use this when you want the standard profile of one concept; usequery_local_ontologyonly for custom SPARQL questions not covered here
Unicode SPARQL note: oxigraph rejects prefixed names with non-ASCII local parts (e.g. myont:modalità_cup). Always use full URIs in angle brackets (<https://...#modalità_cup>) for properties or classes with Unicode in the local name.
| Name | Required | Description | Default |
|---|---|---|---|
| uri | Yes | URI of the class or concept to inspect | |
| mode | No | "raw": only asserted triples (own_properties, no ancestor traversal). "effective" (default): adds inherited_properties via rdfs:subClassOf+/skos:broader+ and data-level incoming/outgoing. | effective |
| file_path | No | Absolute path readable by the MCP server process. If this fails, do NOT read the file — use get_upload_instructions + Bash curl + upload_id instead. | |
| upload_id | No | UUID from POST /upload. Preferred when the file is on the client machine or file_path failed. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations readOnlyHint=true, idempotentHint=true, destructiveHint=false indicate a safe read operation. The description adds extensive behavioral context: modes (raw vs effective), limitations with owl:imports, Unicode SPARQL note, and the file access workflow. No contradictions with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is lengthy but well-structured with sections, bold headers, and lists. It is front-loaded with the core purpose and workflow. While every sentence is informative, slight trimming could improve conciseness without losing clarity.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool is complex with 4 parameters and no output schema. The description comprehensively covers input modes, return behavior (raw vs effective sections), limitations, and cross-references to sibling tools. The agent is fully equipped to invoke the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, but the description adds significant meaning beyond schema: it explains when to use file_path vs upload_id with detailed workflow, elaborates on mode values with examples and behaviors, and clarifies the uri parameter's role. This far exceeds baseline expectations.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Get a full profile of a class or concept from a local or uploaded ontology.' It distinguishes from siblings like inspect_concept (remote) and query_local_ontology (custom SPARQL). The workflow and use cases are explicitly explained.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit when-to-use and when-not-to-use guidelines, including a step-by-step file access workflow, a comparison with related tools, and a tip to use search_concepts first. It covers prerequisites and alternatives comprehensively.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
inspect_local_ontologyInspect Local OntologyARead-onlyIdempotent
Load and summarize an RDF/OWL ontology from the server filesystem, inline content, or an uploaded HTTP store (TTL, OWL/RDF-XML, NT, JSON-LD, Graphol XML).
Input (provide exactly one):
file_path: Absolute path on the MCP server filesystem. Use this only when the server process can really read that path (local stdio, same machine, or Docker with that directory mounted).
content + format: Raw RDF text sent inline. Works in remote HTTP mode too, but only for small payloads (max 1 MB).
upload_id: UUID returned by POST /upload. This is the preferred remote workflow when the ontology file is on the client machine instead of the server.
Important for remote MCP servers:
Do not assume file_path points to the user's laptop or local workstation.
If the MCP server runs on another machine/container and cannot access the file directly, call
get_upload_instructionsfirst, execute the returned curl command via Bash tool (do NOT read the file), then use the upload_id here.Prefer upload_id over trying many path variants when access to the original file is uncertain.
Never read the file content and relay it through the conversation — this wastes tokens. Use get_upload_instructions + Bash tool instead.
format values: "text/turtle" (default), "application/rdf+xml", "application/n-triples", "application/ld+json", "application/graphol+xml"
Returns:
File info: format, triple count, source
Classes: defined owl:Class / rdfs:Class with instance counts (top 20)
Properties: count of object and datatype properties
Namespaces used
Efficiency: file_path results are cached by mtime; repeated calls on unchanged files skip re-parsing.
| Name | Required | Description | Default |
|---|---|---|---|
| format | No | RDF format of content: "text/turtle" (default), "application/rdf+xml", "application/n-triples", "application/ld+json", "application/graphol+xml" | |
| content | No | Raw RDF content as string (for remote server use; max 1 MB) | |
| file_path | No | Absolute path to the ontology file on the server filesystem | |
| upload_id | No | Upload UUID returned by POST /upload (HTTP mode) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate readOnlyHint=true and idempotentHint=true. The description adds caching by mtime, repeated calls skip re-parsing, and explains return structure, aligning with annotations without contradiction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with sections and front-loaded purpose, but slightly lengthy due to multiple input workflows. Every sentence adds value, so still efficient.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given tool complexity (multiple input modes, remote considerations, caching), the description covers all aspects: input selection, format, returns, efficiency. No output schema, but description sufficiently explains return structure.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema descriptions cover all 4 parameters (100%), but the description adds crucial context: max size for content, workflow for upload_id, default format, and usage scenarios, going beyond schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description explicitly states the tool loads and summarizes an RDF/OWL ontology from three sources (filesystem, inline content, upload). It uses specific verbs and resource, and the purpose is clearly differentiated from siblings like query_local_ontology or explore_ontology.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides detailed guidance on when to use each input, with explicit workflow for remote servers (prefer upload_id, use get_upload_instructions). It warns against assumptions about file paths and inefficient token usage, making selection guidance exemplary.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
inspect_local_propertyInspect Property in Local / Uploaded OntologyARead-onlyIdempotent
Get the full semantic profile of a property from a local or uploaded ontology, resolving inherited domain and range via rdfs:subPropertyOf+.
CRITICAL — file access workflow:
Try
file_pathfirst (works only if the file is readable by the MCP server process).If file_path fails for any reason → call
get_upload_instructionswith the local path, execute the returned curl command via Bash tool, parse theidfrom the JSON response, then call this tool again withupload_id.NEVER read the file content and pass it through the conversation. NEVER attempt to parse or analyse the TTL text manually. The upload workflow sends raw bytes directly from disk to server without the AI ever seeing the content — it is always faster, cheaper, and more reliable.
Quale modalita di input usare:
stdio / stessa macchina →
file_pathserver remoto, file grande →
get_upload_instructions+upload_idserver remoto, file piccolo (<1 MB) → valuta
content + formatconinspect_local_ontology, poi passa a upload se servono query ripetute
Tip: Use search_concepts first if you are checking whether an equivalent property already exists in schema.gov.it. Use this tool only after you know you want to inspect the local/uploaded ontology.
Returns:
definition: direct attributes from the local store (type, label, comment, subPropertyOf, inverseOf, functional flags)
assertedDomain: rdfs:domain declared directly on this property in the local file
assertedRange: rdfs:range declared directly on this property in the local file
superproperties: ancestor chain via rdfs:subPropertyOf+; each entry has source:
"local" = found in the local store
"remote" = not in local file, resolved from schema.gov.it
"not-found" = absent from both
inheritedDomain: domain values collected from super-properties, each annotated with ancestor URI and source
inheritedRange: range values collected from super-properties, each annotated with ancestor URI and source
effectiveDomain: deduplicated union of assertedDomain + inheritedDomain
effectiveRange: deduplicated union of assertedRange + inheritedRange
redundancy_analysis: diagnostic view of each asserted value:
"redundant": identical to an inherited value — the axiom can be dropped without semantic loss
"specialization": a rdfs:subClassOf of an inherited value — genuinely narrows the domain/range
"new": not present in any inherited value — adds information not implied by the super-property chain
summary counts per category for quick overview
warnings: super-properties not resolved, remote lookup failures
owl:imports handling: The local store typically does NOT contain imported ontologies (owl:imports declarations are not followed automatically). Super-properties from external namespaces (e.g. l0:name, l0:description from OntoPiA) are resolved against schema.gov.it automatically, making the effective semantics complete without requiring the full import chain to be loaded.
Use case — subproperty chains: For properties like ha_cup_collegato_per_fusione rdfs:subPropertyOf ha_cup_collegato, this tool shows whether domain/range are asserted directly, inherited from ha_cup_collegato, or need remote resolution. For subPropertyOf l0:name, it fetches l0:name's domain/range from schema.gov.it and shows it as source "remote".
When to use this vs X:
vs
get_property_details: use this for a local or uploaded ontology; useget_property_detailsfor a property already published in the remoteschema.gov.itcatalogvs
query_local_ontology: use this when you want the standard semantic profile of one property; usequery_local_ontologyonly for custom SPARQL questions not covered here
Unicode SPARQL note: oxigraph rejects prefixed names with non-ASCII local parts. For properties with Unicode in the local name (e.g. myont:modalità_cup), always pass the full URI in angle brackets (<https://...#modalità_cup>).
| Name | Required | Description | Default |
|---|---|---|---|
| uri | Yes | URI of the property to inspect | |
| file_path | No | Absolute path readable by the MCP server process. If this fails, do NOT read the file — use get_upload_instructions + Bash curl + upload_id instead. | |
| upload_id | No | UUID from POST /upload. Preferred when the file is on the client machine or file_path failed. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare readOnlyHint, idempotentHint, and openWorldHint, already indicating safety. The description adds extensive behavioral details: how super-properties are resolved (local/remote/not-found), owl:imports handling, redundancy analysis, Unicode SPARQL note, and return structure. No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is long but well-structured with clear sections (critical workflow, input mode guidance, returns, etc.). It front-loads essential purpose and uses formatting (e.g., lists, bold) for clarity. Could be slightly more concise, but every section adds necessary detail.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity and absence of an output schema, the description thoroughly covers return values, edge cases (file access failures, Unicode, remote resolution), and provides a complete semantic profile. It leaves no gaps for an AI agent to misinterpret.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, but the description adds significant context: explains when to use each parameter, the workflow for file_path failure, and the difference between file_path and upload_id. Also provides a tip for Unicode handling with the uri parameter.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'Get the full semantic profile of a property' and mentions resolving inherited domain/range, distinguishing it from siblings like get_property_details (for remote properties) and query_local_ontology (for custom SPARQL).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit when-to-use guidance, including a critical file access workflow with step-by-step instructions, alternatives for input modes, and comparisons to other tools like get_property_details and query_local_ontology. Also advises using search_concepts first.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_datasetsList DatasetsARead-onlyIdempotent
List available Datasets (dcatapit:Dataset) in the catalog.
Use this when you explicitly need DCAT-AP_IT dataset records. On schema.gov.it, these are often semantic assets such as ontologies, controlled vocabularies, and related distributions rather than classic tabular datasets, so ontology/vocabulary/SPARQL tools are usually a better starting point.
Args:
limit: Maximum datasets per page (default: 20)
offset: Number of datasets to skip (default: 0)
Returns:
items: List of datasets with labels
pagination: Metadata with count, offset, has_more, next_offset
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | ||
| offset | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, destructiveHint=false, covering safety and idempotency. The description adds context that the datasets are often semantic assets like ontologies and controlled vocabularies, which is a behavioral trait beyond annotations. It does not contradict annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise and well-structured: a brief purpose statement, usage guidance, then clearly labeled Args and Returns sections. Every sentence serves a purpose, and the most important information (what the tool does) comes first.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool is a simple list with 2 parameters, no output schema, and rich annotations, the description covers everything needed: it explains what the tool returns (items with labels and pagination metadata), how to use parameters, and even gives usage context. Nothing is missing for an agent to invoke it correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 2 parameters (limit, offset) with no descriptions in the schema (0% coverage). The description compensates fully by providing explicit descriptions: 'Maximum datasets per page (default: 20)' and 'Number of datasets to skip (default: 0).' This adds significant meaning beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'List available Datasets (dcatapit:Dataset) in the catalog.' It uses a specific verb ('List') and resource ('Datasets'), and distinguishes itself from siblings by noting that other tools (ontology/vocabulary/SPARQL) are usually better starting points, aligning with the context of the sibling tools list.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explicitly says 'Use this when you explicitly need DCAT-AP_IT dataset records.' It also provides guidance on when not to use it: 'so ontology/vocabulary/SPARQL tools are usually a better starting point.' This helps the agent decide between this tool and its numerous siblings.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_identifiersList IdentifiersARead-onlyIdempotent
List CLV Identifier resources by type, with counts and sample values.
Args:
identifierType: (optional) Filter by identifier type string (e.g. "Codice Catastale", "Sigla Automobilistica")
limit: Maximum results (default: 20)
Returns:
If no identifierType: Summary of all identifier types with counts
If identifierType provided: Sample identifiers of that type with their values and linked entities
Use when: Exploring the clv:Identifier resources and their identifierType values in the triplestore.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | Maximum results | |
| identifierType | No | Filter by type (e.g. "Codice Catastale") |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already supply readOnlyHint, idempotentHint, and destructiveHint false. The description adds value by detailing the conditional return behavior based on the identifierType parameter, which aids understanding beyond the annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is very concise and well-structured with clear headings (Args, Returns, Use when). Every sentence serves a purpose, and the main action is front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple list tool with two parameters and no output schema, the description adequately covers behavior, parameter effects, and usage context. Minor omissions like pagination details do not significantly detract from completeness.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, but the description enriches both parameters: limit with default value (also in schema) and identifierType with concrete examples ('Codice Catastale', 'Sigla Automobilistica'). This adds practical semantic value.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool lists CLV Identifier resources by type with counts and sample values, specifying the action and resource. It does not explicitly differentiate from sibling tools like explore_classes or describe_resource, but the purpose is unambiguous.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The 'Use when' section provides clear context for when to use the tool (exploring clv:Identifier resources). However, it offers no exclusions or alternative tool references, so it falls short of a top score.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_instances_of_classList Instances of ClassARead-onlyIdempotent
List instances of a given class in the catalog.
Args:
class_uri: URI of the class (e.g. 'https://w3id.org/italia/onto/COV/PublicOrganization')
limit: Items per page (default: 20, max: 200)
offset: Items to skip (default: 0)
Returns:
instances: list of URIs with labels
pagination: total count, offset, has_more
Use when: You found a class and want to know if it has real instances (i.e., whether it is used in the catalog, not just defined theoretically).
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | Items per page (max 200) | |
| offset | No | Items to skip | |
| class_uri | Yes | URI of the class to list instances of |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate read-only, idempotent, and non-destructive behavior. The description adds transparency about pagination parameters (limit, offset) and return structure, which is useful beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is succinct and well-organized with separate sections for Args, Returns, and Use when. Every sentence adds value without redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity, the description fully covers parameters, return format, and usage context. No output schema is needed because Returns are described in prose.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so the description mainly echoes the schema with defaults and constraints. It adds an example URI for class_uri, but does not significantly enhance understanding beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'List instances of a given class in the catalog' with a specific verb and resource. It distinguishes from sibling tools like explore_classes or inspect_concept by focusing on listing actual instances.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Includes a 'Use when' section that provides clear context: when you have a class and want to know if it has real instances. Although it doesn't explicitly exclude other tools, the guidance is precise and actionable.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_linked_endpointsList Linked SPARQL EndpointsARead-onlyIdempotent
Discover SPARQL endpoints referenced in the schema.gov.it catalog via dcat:DataService.
Args: None
Returns:
List of data services with endpoint URL, title, description, and conformsTo standard
Use when: Exploring what external SPARQL endpoints are connected to the Italian PA semantic catalog.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false, so safety is clear. The description adds value by detailing the return structure (list with endpoint URL, title, description, conformsTo standard) and source catalog, which goes beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is extremely concise, using a few short sentences to cover purpose, arguments, returns, and usage. The structured format with 'Args:' and 'Returns:' sections, plus a 'Use when' tip, is efficient and easy to parse.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no parameters and no output schema, the description provides adequate context: it specifies the source (schema.gov.it catalog), return fields, and usage scenario. It might lack details on pagination or limits, but for a catalog exploration tool, it is sufficiently complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has zero parameters, so the description has no need to explain parameters. Schema coverage is 100% (vacuously). The description correctly states 'Args: None', which is sufficient.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool discovers SPARQL endpoints from the schema.gov.it catalog via dcat:DataService. It uses a specific verb ('Discover') and resource ('SPARQL endpoints'), distinguishing it from sibling tools like list_datasets or list_ontologies.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The 'Use when' section explicitly advises to use the tool when exploring external SPARQL endpoints connected to the Italian PA semantic catalog. While it doesn't mention alternatives or when not to use it, the guidance is clear and context-appropriate.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_municipalitiesList MunicipalitiesARead-onlyIdempotent
Browse Italian municipalities (comuni) with their codes.
Args:
limit: Items per page (default: 50, max: 500)
offset: Items to skip (default: 0)
keyword: (optional) Filter by name (case-insensitive)
withBelfiore: (optional) If true, include Belfiore/cadastral codes via URI extraction (slower)
lang: "it" | "en" | "any" (default: "any")
Returns:
municipalities: List of cities with ISTAT code, name, and optionally Belfiore code
pagination: Total count, offset, has_more
Note: Uses BIND+REPLACE URI extraction for Belfiore codes to avoid Virtuoso timeout on identifierType joins. Each ISTAT code may appear with multiple historical names; results are deduplicated by notation.
| Name | Required | Description | Default |
|---|---|---|---|
| lang | No | Preferred name language; "any" keeps all languages. | any |
| limit | No | Items per page (max 500) | |
| offset | No | Items to skip | |
| keyword | No | Filter by municipality name | |
| withBelfiore | No | Include Belfiore/cadastral codes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint and idempotentHint, but the description adds valuable behavioral context: the BIND+REPLACE URI extraction for Belfiore codes to avoid timeout, deduplication logic, and return structure. No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with Args, Returns, and Notes. It is front-loaded and clear, though the technical note about Virtuoso timeout adds slight verbosity.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With 5 parameters and no output schema, the description covers the return structure, pagination, and deduplication. It provides sufficient context for an agent to use the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, baseline 3. The description adds meaning: keyword is a filter, lang sets name language, withBelfiore is slower and optional. It explains the tradeoff for withBelfiore beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool browses Italian municipalities (comuni) with their codes. It uses specific verbs and resource, distinguishing it from sibling tools like list_provinces or list_identifiers.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage for listing municipalities and provides parameter guidance, but does not explicitly state when to use this tool versus alternatives or when not to use it.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_okg_categoriesList OKG Thematic CategoriesARead-onlyIdempotent
Fetch the available thematic categories from the Open Knowledge Graphs (OKG) catalog.
Returns: List of category names that can be used as filters in search_okg_resources and compare_coverage_with_okg.
Use when: You need to know which categories are available before filtering OKG searches.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint. Description adds no additional behavioral context about side effects, auth needs, or rate limits, only describes return value.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Three concise sentences: what it does, what it returns, when to use. No fluff, well-structured with bolded headings for returns and use case.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Despite simplicity, description fully covers purpose, return value, and usage context. Sibling tools like search_okg_resources are referenced, making it complete for its role.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
No parameters, so description needs no parameter info. Baseline 4 as per instructions for 0-param tools.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states it fetches thematic categories from OKG catalog, specifying the resource and action. Differentiates from siblings by focusing on listing categories for filtering.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicit 'Use when' statement provides clear guidance: when you need categories before filtering OKG searches. Also notes the output can be used as filters in specific tools, avoiding misuse.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_ontologiesList OntologiesARead-onlyIdempotent
List available Ontologies (Data Models) and their titles.
Args:
limit: Maximum number of ontologies to return (default: 50)
normalize_trailing_slash: If true, merge ontology IRIs that differ only by a final "/" (default: true)
include_variants: If true and normalization is enabled, include raw URI variants to expose catalog inconsistencies
Returns:
List of ontology URIs with labels/titles, ordered alphabetically
Note: Some ontologies are duplicated in the catalog with and without a trailing slash. By default this tool normalizes them, but you can inspect the raw variants when cleaning the catalog.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | ||
| include_variants | No | ||
| normalize_trailing_slash | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, idempotent, non-destructive. Description adds value by explaining normalization of trailing slashes and return ordering, which are behavioral traits beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with Args, Returns, and Note sections. Efficiently covers multiple aspects without verbosity. Purpose is front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers purpose, parameters, behavior, and return format. No output schema exists, but description adequately documents return list content and ordering.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
All three parameters are explained with defaults and effects, compensating for 0% schema description coverage. Provides meaningful usage context (e.g., normalize_trailing_slash, include_variants).
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states 'List available Ontologies' and mentions specific resource type and ordering. It is specific but does not explicitly differentiate from sibling list tools like list_vocabularies or list_datasets.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Description explains default parameter behaviors and provides guidance on using include_variants for catalog cleaning. However, it does not give when-not-to-use context or compare with alternative tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_propertiesList PropertiesARead-onlyIdempotent
List ObjectProperty and DatatypeProperty defined in an ontology or globally.
Args:
ontologyUri: (optional) URI of the ontology to filter by
propertyType: (optional) "object", "datatype", or "both" (default: "both")
limit: Maximum results (default: 50)
Returns:
List of properties with domain, range, and label
Examples:
No args: All properties (top 50)
ontologyUri="https://w3id.org/italia/onto/CPV": Properties from CPV ontology
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | ||
| ontologyUri | No | URI of ontology to filter by | |
| propertyType | No | both |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate readOnly, idempotent, non-destructive. The description adds behavioral details: returns a list of properties with domain, range, and label, and limits results to 50 by default. It does not contradict annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise and well-structured with Args, Returns, and Examples sections. It front-loads the purpose and uses minimal but complete sentences. No redundant or extraneous information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with 3 optional params and no output schema, the description covers all aspects: argument details, return value structure, and concrete examples. It is complete for an agent to understand and use the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema has 3 params with only 33% description coverage (ontologyUri has description). The description adds meaning for all params: ontologyUri as optional filter, propertyType as enum with default 'both', limit as max results default 50. It compensates for low schema coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool lists ObjectProperty and DatatypeProperty from an ontology or globally. It uses specific verbs and resource types, and distinguishes from sibling tools like get_property_details (which likely retrieves a single property) and explore_ontology (broader context).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit arguments, defaults, and examples (empty args, with ontologyUri). It implicitly guides when to use (listing properties) but does not state when not to use or alternatives. Still, the usage context is clear.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_provincesList ProvincesARead-onlyIdempotent
List Italian provinces with their codes (ISTAT, car plate, metropolitan city).
Args:
keyword: (optional) Filter by province name (case-insensitive)
lang: "it" | "en" | "any" (default: "any")
Returns:
List of provinces with notation (ISTAT code), name, sigla (car plate), and metro code (if metropolitan city)
Note: Runs 3 parallel queries for names, car plates, and metro codes, then joins client-side. There are ~107 provinces, 14 of which are metropolitan cities.
| Name | Required | Description | Default |
|---|---|---|---|
| lang | No | Preferred name language; "any" keeps all languages. | any |
| keyword | No | Filter by province name |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already provide readOnlyHint, idempotentHint, destructiveHint, and openWorldHint. The description adds behavioral transparency by stating it runs 3 parallel queries and joins client-side, and gives specific counts of provinces and metropolitan cities. No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with Args and Returns sections, and the Note adds useful context. It is not overly verbose but could be slightly more concise.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description adequately explains return fields (ISTAT code, name, sigla, metro code). It also describes the parallel query execution and counts, making the tool's behavior fully understandable.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with both parameters described. The description adds extra semantic value: keyword is case-insensitive, and lang default behavior is clarified. This goes beyond the schema's enum and default.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it lists Italian provinces with their codes, using specific verbs and resource (list provinces). It distinguishes itself from sibling tools like list_municipalities, list_ontologies, or list_identifiers by focusing on provinces.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explains what the tool does and optional arguments but does not provide guidance on when to use this tool vs alternatives. No explicit when-to-use or when-not-to-use context is given.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_vocabulariesList VocabulariesARead-onlyIdempotent
List available Controlled Vocabularies (ConceptSchemes) and their instance counts.
Args:
limit: Maximum vocabularies to return (default: 20)
Returns:
List of ConceptSchemes with labels and concept counts, ordered by count descending
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate readOnly, openWorld, idempotent, and non-destructive behavior. The description adds transparency by specifying the return format (list of ConceptSchemes with labels and concept counts, ordered by count descending), which is beyond annotation coverage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is two sentences plus a structured Args/Returns section. No wasted words, front-loaded with the core purpose, and well-organized for quick parsing.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (one optional parameter, no output schema, safety annotations), the description covers the essential behavior. It returns a list with ordering and fields, which is adequate for agent decision-making.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, but the description documents the 'limit' parameter with a default value of 20, providing meaning beyond the schema's type and default. For a single self-explanatory parameter, this is sufficient compensation.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool lists available Controlled Vocabularies (ConceptSchemes) with instance counts. The verb 'list' and specific resource 'ConceptSchemes' differentiate it from sibling tools like browse_vocabulary or search_in_vocabulary.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage for browsing vocabularies but does not explicitly state when to use this tool versus alternatives like explore_catalog or list_ontologies. No exclusion criteria or alternative suggestions are provided.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
preview_distributionPreview DistributionARead-onlyIdempotent
Download and preview the first rows of a distribution file.
Most useful after you already identified a concrete distribution URL. On schema.gov.it, distributions often belong to semantic assets rather than classic tabular datasets.
Args:
url: Download URL of the distribution (CSV or JSON)
Returns:
Preview of first 10-15 rows/items of data
Supported formats: CSV, JSON (auto-detected by content-type or extension) Timeout: 10 seconds
| Name | Required | Description | Default |
|---|---|---|---|
| url | Yes | The download URL of the distribution |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate read-only, idempotent, non-destructive. The description adds significant behavioral details: it downloads and previews data, returns 10-15 rows, auto-detects CSV/JSON formats, and has a 10-second timeout. No contradictions with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured: a concise purpose sentence, followed by usage context, then clearly labeled sections for Args, Returns, Supported formats, and Timeout. No redundant information; every sentence adds value.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (one parameter, no output schema, rich annotations), the description covers purpose, usage context, parameter details, return format, supported formats, and timeout. The note about semantic assets adds domain-specific completeness. No gaps are apparent.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% (one param with description). The description adds value by specifying the accepted formats (CSV or JSON) and that format is auto-detected, which goes beyond the schema's generic description. This benefits the agent beyond the baseline of 3 for high coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The first sentence clearly states the action (Download and preview) and the resource (distribution file). The phrase 'most useful after you already identified a concrete distribution URL' distinguishes it from sibling tools like explore_dataset or inspect_concept, which deal with broader resources. The domain-specific note about semantic assets further clarifies its niche.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explicitly states when to use: 'most useful after you already identified a concrete distribution URL.' It provides context about schema.gov.it and distributions belonging to semantic assets. However, it does not explicitly exclude alternative tools or mention when not to use it, so it lacks exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
query_external_endpointQuery External SPARQL EndpointARead-onlyIdempotent
Execute a SPARQL query against any public HTTPS SPARQL endpoint.
Args:
endpointUrl: URL of the target SPARQL endpoint (must be HTTPS)
query: SPARQL query to execute
injectPrefixes: Whether to inject schema.gov.it standard prefixes (default: false)
Returns:
Compressed SPARQL results in the same format as internal tools
Security: Only HTTPS endpoints are allowed. Requests timeout after 15 seconds.
Examples:
Query DBpedia: endpointUrl="https://dbpedia.org/sparql"
Query EU Publications Office: endpointUrl="https://publications.europa.eu/webapi/rdf/sparql"
When to use this vs X:
vs
query_sparql: use this only for an external HTTPS endpoint; usequery_sparqlfor the built-inschema.gov.itendpointvs
explore_external_endpoint: use this when you already know the query you want to run; useexplore_external_endpointfirst if you just need a structural overview
Do not use this if:
you want to query
schema.gov.ititself → usequery_sparqlyou want a curated shortlist of endpoints → use
recommend_external_endpointsyou only need endpoints already linked in the catalog metadata → use
list_linked_endpoints
| Name | Required | Description | Default |
|---|---|---|---|
| query | Yes | SPARQL query to execute | |
| endpointUrl | Yes | URL of the target SPARQL endpoint (HTTPS required) | |
| injectPrefixes | No | Whether to inject schema.gov.it standard prefixes (rdf, rdfs, owl, skos, dct...) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, destructiveHint=false. The description adds valuable behavioral context: security constraint (HTTPS only), timeout (15 seconds), and return format (compressed results). No contradiction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-organized with clear section headers (Args, Returns, Security, Examples, When to use). Each sentence adds value, no repetition. Appropriate length given complexity (11 lines).
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The description covers all critical aspects: purpose, parameters, security, return format, usage guidance with alternatives, and examples. Despite no output schema, the return description is sufficient. For a tool with 3 parameters and security considerations, this is complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with descriptions for all three parameters. The description adds value with examples (DBpedia, EU Publications Office), clarifies the injectPrefixes default, and reiterates security constraint on endpointUrl. This goes beyond baseline 3.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it executes SPARQL queries against any public HTTPS SPARQL endpoint, with specific verb 'Execute a SPARQL query' and resource 'public HTTPS SPARQL endpoint'. It distinguishes from siblings like query_sparql (internal endpoint) and explore_external_endpoint (structural overview).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explicitly provides a 'When to use this vs X' section with clear alternatives (query_sparql, explore_external_endpoint, recommend_external_endpoints, list_linked_endpoints) and a 'Do not use this if' section with specific conditions and correct tool recommendations.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
query_local_ontologyQuery Local OntologyARead-onlyIdempotent
Execute a SPARQL SELECT query against an ontology available on the server filesystem or through HTTP upload.
Quale modalita di input usare:
stdio / stessa macchina →
file_pathserver remoto, file grande →
get_upload_instructions+upload_idserver remoto, file piccolo (<1 MB) → usa
inspect_local_ontologyconcontent + formatper l'analisi; per query ripetute preferisci upload +upload_id
Args (provide exactly one of file_path or upload_id):
file_path: Absolute path on the MCP server filesystem. Use only if the server can really read that path.
upload_id: UUID returned by POST /upload. Use this in HTTP/remote mode when the file is local to the client, not the server.
query: SPARQL SELECT query
inject_prefixes: Inject standard prefixes (rdf, rdfs, owl, skos, dct…) — default true
Important for remote MCP servers:
If a direct file path is not accessible from the server, do not keep retrying with alternative local paths.
Call
get_upload_instructionswith the file path, execute the returned curl command via Bash tool (do NOT read the file first), then use the upload_id here.Never relay the file content through the conversation — this wastes tokens. curl sends bytes directly from disk to server.
Returns:
Compressed SPARQL results (tabular for >5 rows, compact for ≤5 rows)
When to use this vs X:
vs
query_sparql: use this for a local/uploaded ontology; usequery_sparqlfor the default remote catalogvs
query_uploaded_store: prefer this tool when you already have anupload_id;query_uploaded_storeis only a thinner upload-specific path
Do not use this if:
you need a standard profile of a concept or property → use
inspect_local_conceptorinspect_local_propertyyou just need a summary of the ontology → use
inspect_local_ontology
Supported formats: .ttl (Turtle), .owl / .rdf (RDF/XML), .nt (N-Triples), .jsonld (JSON-LD), .graphol (Graphol XML) Efficiency: File is cached after first load; repeated queries on the same unchanged file skip re-parsing. Note: Standard prefixes (rdf, rdfs, owl, skos…) are injected automatically unless inject_prefixes=false.
| Name | Required | Description | Default |
|---|---|---|---|
| query | Yes | SPARQL SELECT query to execute | |
| file_path | No | Absolute path to the local ontology file (local/Docker) | |
| upload_id | No | Upload UUID returned by POST /upload (HTTP mode) | |
| inject_prefixes | No | Inject standard prefixes (default: true) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond annotations (readOnlyHint=true, idempotentHint=true, destructiveHint=false), the description adds file caching, automatic prefix injection, compressed result format, supported file formats, and efficiency notes. No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with headings, bullet points, and clear sections. While lengthy, every part serves a purpose. Slightly verbose but not wasteful.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity (multiple input modes, remote server considerations, many siblings), the description covers all necessary aspects: return format, caching, prefixes, supported formats, and links to related tools. No gaps.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so baseline is 3. The description adds context: mutual exclusivity of file_path and upload_id, logic for choosing input mode, and default for inject_prefixes. Adds value beyond schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool executes SPARQL SELECT queries against a local or uploaded ontology, using a specific verb and resource. It distinguishes from sibling tools like query_sparql and query_uploaded_store by specifying when to use each.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit when-to-use and when-not-to-use guidance, including three input modes (file_path, upload_id, inspect_local_ontology) with conditions, and lists alternatives for concept/property inspection and ontology summary.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
query_sparqlExecute SPARQL QueryARead-onlyIdempotent
Execute a RAW SPARQL query against schema.gov.it.
Args:
query: The SPARQL query to execute (prefixes are auto-injected)
source: "schema" | "local" | "hybrid" (default: "schema")
file_path / content / upload_id: local context when source="local"
Returns:
Compressed JSON result (tabular for >5 rows, object array otherwise)
Examples:
SELECT ?s ?p ?o WHERE { ?s ?p ?o } LIMIT 10SELECT ?class (COUNT(?s) AS ?count) WHERE { ?s a ?class } GROUP BY ?class
When to use this vs X:
vs
query_local_ontology: use this for the default remote catalogschema.gov.it; usequery_local_ontologyfor a file/store loaded locally or viaupload_idvs
query_external_endpoint: use this for the built-inschema.gov.itendpoint; usequery_external_endpointonly for another HTTPS SPARQL endpointvs specialized tools: use this only when no dedicated tool already covers the task
Do not use this if:
you need a concept profile → use
inspect_conceptyou need property semantics → use
get_property_detailsyou need to search by keyword without a known URI → use
search_conceptsyou need to browse a vocabulary or dataset → use the dedicated vocabulary/dataset tools
Important: raw hybrid SPARQL is not supported yet. Use source="hybrid" only on specialized concept/property tools, not here.
Note: Use this for ad-hoc exploration. Prefer specialized tools for common operations.
| Name | Required | Description | Default |
|---|---|---|---|
| query | Yes | The SPARQL query to execute | |
| format | No | RDF content type for inline content | |
| source | No | Execution context: "schema" for schema.gov.it, "local" for a file/uploaded store. "hybrid" is reserved and not supported for raw SPARQL. | schema |
| content | No | Inline RDF content when source='local' | |
| file_path | No | Absolute path to a local ontology file when source='local' | |
| upload_id | No | Uploaded ontology store ID when source='local' |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Adds behavioral details beyond annotations: prefix auto-injection, compressed JSON response format, unsupported hybrid mode. No contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with sections (Args, Returns, Examples, guidance), but somewhat lengthy. Every sentence adds value, but could be more concise.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given 6 parameters, no output schema, and annotations, the description covers the tool comprehensively with examples, return format, and usage scenarios.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, but description adds context for parameters (grouping, default source, hybrid restriction) and includes examples. Could be slightly more detailed for source parameter.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it executes a RAW SPARQL query against schema.gov.it, and distinguishes from sibling tools by listing alternatives and disclaimers.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly provides when-to-use and when-not-to-use guidance with specific alternative tools, making selection unambiguous.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
query_uploaded_storeQuery Uploaded StoreARead-onlyIdempotent
Execute a SPARQL SELECT query against a temporary ontology store created via HTTP upload.
Workflow (HTTP mode only):
Call
get_upload_instructionswith the local file path → get the curl commandExecute the curl command via Bash tool (file bytes go directly to the server, no AI token consumption)
Parse the
idfrom the curl responseUse
idhere to run SPARQL queries, OR pass it asupload_idtoinspect_local_ontology,query_local_ontology,compare_local_with_remote
When to use this workflow:
The MCP server is remote, containerized, or otherwise cannot read the user's local filesystem.
A previous
file_pathattempt failed because the path only exists on the client machine.You want to send raw file bytes directly without consuming model tokens.
When to use this vs X:
prefer
query_local_ontologywithupload_idfor the main MCP workflowuse this only if you already have the upload store id and explicitly want to query that temporary store directly
Deprecated direction: this is an upload-specific shortcut; for new agent flows prefer query_local_ontology with upload_id
Supported Content-Types for upload: text/turtle, application/rdf+xml, application/n-triples, application/ld+json, application/graphol+xml
Notes:
Uploaded stores are kept for 1 hour then evicted
Standard prefixes (rdf/rdfs/owl/skos/dct/xsd/dcat/foaf/clv/cpv/l0/sm) are auto-injected
The same store is also queryable directly via
GET /sparql/<id>?query=...
| Name | Required | Description | Default |
|---|---|---|---|
| id | Yes | Upload UUID returned by POST /upload | |
| query | Yes | SPARQL SELECT query to execute against the uploaded store |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Builds on annotations (readOnly, idempotent, non-destructive) by adding key behavioral facts: stores evicted after 1 hour, standard prefixes auto-injected, and alternative direct endpoint access. No contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with clear sections (summary, workflow, when-to-use, alternatives, notes). Front-loaded with purpose. Slightly verbose due to workflow details that could be external, but every sentence is informative and earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Very complete for a complex tool: explains prerequisite workflow, supported content types, eviction policy, and prefix injection. Lacks specification of the output format (e.g., SPARQL results JSON), but this is somewhat implied by the nature of a SPARQL query tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema already has 100% description coverage for both parameters (id and query). The description adds context about where the id comes from (workflow step 3) and that query is a SPARQL SELECT, but does not add syntax or format details beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it executes SPARQL SELECT queries against a temporary ontology store created via HTTP upload, specifying both the resource (temporary store) and action (querying). It distinguishes from siblings like query_local_ontology and query_sparql by emphasizing the upload workflow.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit step-by-step workflow, conditions for when to use (HTTP mode only, remote server scenario), and clear alternatives (prefer query_local_ontology with upload_id). Also includes deprecation note guiding toward newer flows.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
recommend_external_endpointsRecommend External SPARQL EndpointsARead-onlyIdempotent
Return a curated list of useful public SPARQL endpoints to pair with schema.gov.it.
Args:
category: (optional) Filter by endpoint family: "italian-pa", "eu", or "knowledge-graph"
limit: Maximum results (default: 10)
Returns:
Curated endpoint recommendations with rationale, suggested use cases, and example query ideas
Use when: You want a high-signal shortlist of external endpoints before using query_external_endpoint or explore_external_endpoint.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | Maximum number of endpoints to return | |
| category | No | Optional category filter |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate read-only, idempotent, non-destructive behavior. The description adds value by specifying that results include rationale, suggested use cases, and example query ideas, and that the list is curated (high-signal). No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise and well-structured: a one-sentence purpose, bullet-pointed Args and Returns, and a clear 'Use when' section. Every sentence adds necessary information with no redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description adequately describes the return as curated recommendations with rationale, use cases, and example queries. It also sets context for when to use the tool. Could mention behavior without category filter, but still complete enough.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so baseline is 3. The description repeats the parameter names and default but adds little beyond the schema descriptions. Category filter is described as 'endpoint family' with enumerated values, but this is already in the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool returns a curated list of useful public SPARQL endpoints to pair with schema.gov.it, which is a specific verb+resource. It distinguishes from sibling tools by explicitly mentioning use before query_external_endpoint or explore_external_endpoint.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Description includes 'Use when: You want a high-signal shortlist of external endpoints before using query_external_endpoint or explore_external_endpoint', providing explicit context and alternatives. This tells the agent when to use this tool and what to do next.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
resolve_territorial_uriResolve Territorial URIARead-onlyIdempotent
Resolve an Italian territorial code to its canonical CLV URI with labels and related URIs.
Args:
code_type: Type of code: "istat-comune", "istat-provincia", "istat-regione", or "belfiore"
code: The code value (e.g. "046030" for ISTAT comune, "F205" for Belfiore)
date: (optional) ISO date string (e.g. "2022-08-12") — noted in output, full temporal filtering not yet implemented
Returns:
uri: canonical CLV URI
name: official name
code_type and code
related: connected territorial URIs (province for cities, region for provinces)
date_note: reminder if date was provided
Use when: You have a raw territorial code (ISTAT or Belfiore) and need the official semantic URI to use in JSON-LD or RDF modeling.
| Name | Required | Description | Default |
|---|---|---|---|
| code | Yes | The code value (e.g. '046030', 'F205', '001') | |
| date | No | Optional ISO date for temporal context (e.g. '2022-08-12') | |
| code_type | Yes | Type of territorial code |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, openWorld, idempotent, non-destructive. The description adds that the date parameter is noted in output but full filtering not yet implemented, providing useful behavioral context beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections (Args, Returns, Use when). It uses bullet-like formatting and every sentence adds value without redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (3 params, no output schema), the description covers purpose, parameters, return fields, usage guidance, and a limitation. It is fully self-contained.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with descriptions for all params. The description adds examples, allowed values (matching enum), and explains the date parameter's partial implementation, adding value beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool resolves Italian territorial codes to canonical CLV URIs. It uses a specific verb-resource combination and distinguishes from siblings which handle search, listing, or querying rather than code resolution.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The 'Use when' section explicitly tells agents to use this when they have a raw code and need a semantic URI. It does not list alternatives, but the context of sibling tools makes the purpose sufficiently clear.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_conceptsSearch ConceptsARead-onlyIdempotent
Fuzzy search for concepts/classes/properties by keyword.
Args:
keyword: Search term (e.g. 'amministrazione')
limit: Maximum results (default: 10)
resource_type: (optional) Filter by type: "class", "property", "concept"
ontology_filter: (optional) URI prefix to restrict the search (e.g. 'https://w3id.org/italia/onto/COV/')
prefer_core: (optional) If true, results from core ontologies (COV, CPV, CLV, l0) are ranked first
lang: "it" | "en" | "any" (default: "any")
Returns:
Matching subjects with type and label
When to use this vs X:
use this when you do not know the exact URI yet
vs
search_in_vocabulary: use this to search across the whole catalog; usesearch_in_vocabularyorbrowse_vocabularyonly when the ConceptScheme is already known
Use when: You don't know the exact URI of a concept. Use resource_type and ontology_filter to reduce noise.
| Name | Required | Description | Default |
|---|---|---|---|
| lang | No | Preferred label language; "any" keeps all languages. | any |
| limit | No | ||
| keyword | Yes | The search term (e.g. 'amministrazione') | |
| prefer_core | No | If true, rank results from COV, CPV, CLV, l0 ontologies first | |
| resource_type | No | Filter by resource type: "class", "property", or "concept" | |
| ontology_filter | No | Restrict results to URIs starting with this prefix (e.g. 'https://w3id.org/italia/onto/COV/') |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Disclosures include fuzzy search behavior, return format ('Matching subjects with type and label'), ranking with prefer_core, and default limit. Annotations (readOnlyHint, etc.) are consistent and description adds significant context beyond them.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with sections (description, args, returns, when to use). Every sentence provides value; no redundancy. Efficient length for a 6-parameter tool.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity and no output schema, the description covers return format, parameter usage, and when to use. It is complete for an agent to select and invoke correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is high (83%), and the description adds meaningful context: keyword example, limit default, resource_type options, ontology_filter example, prefer_core explanation, lang options. However, some parameter details are already in schema, so slightly above baseline.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'Fuzzy search for concepts/classes/properties by keyword', specifying the verb and resource. It distinguishes from sibling tools like search_in_vocabulary by explaining when to use each.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use this tool ('when you do not know the exact URI yet') and contrasts with alternatives (search_in_vocabulary, browse_vocabulary). Also advises using resource_type and ontology_filter to reduce noise.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_in_vocabularySearch in VocabularyARead-onlyIdempotent
Search for concepts within a specific Controlled Vocabulary (ConceptScheme).
Args:
schemeUri: URI of the ConceptScheme (from list_vocabularies)
keyword: Search term for label matching (case-insensitive regex)
limit: Maximum results (default: 20)
lang: "it" | "en" | "any" (default: "any")
Returns:
Matching concepts with labels and optional notation codes
When to use this vs X:
vs
browse_vocabulary: use this only for a quick keyword search inside a scheme you already knowbrowse_vocabularyis usually the better default because it supports pagination and already acceptskeyword
Deprecated: Deprecated. Usa browse_vocabulary con il parametro keyword.
| Name | Required | Description | Default |
|---|---|---|---|
| lang | No | Preferred label language; "any" keeps all languages. | any |
| limit | No | ||
| keyword | Yes | The search keyword | |
| schemeUri | Yes | The URI of the ConceptScheme (from list_vocabularies) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare read-only, idempotent, and non-destructive behavior. The description adds behavioral details: case-insensitive regex keyword matching, default limit, language options, and return format (labels and optional notation codes). No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured: a one-sentence summary, clear list of args, return info, usage guidance, and deprecation notice. Every sentence adds value; no wasted words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers all parameters, return values, and usage context. Differentiates from sibling browse_vocabulary. Lacks error handling or edge cases, but for a deprecated search tool it is sufficient.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 75%; description adds meaning beyond schema: schemeUri comes from list_vocabularies, keyword is case-insensitive regex, limit is maximum results, lang values are explicitly listed. Adds useful context not in schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool searches for concepts within a specific Controlled Vocabulary, with a specific verb and resource. It distinguishes itself from browse_vocabulary by noting it is for quick keyword search in a known scheme.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly provides when-to-use vs alternatives: 'use this only for a quick keyword search inside a scheme you already know', and recommends browse_vocabulary as a better default. Also marks the tool as deprecated, guiding agents away from it.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_okg_resourcesSearch Open Knowledge Graphs ResourcesARead-onlyIdempotent
Search the Open Knowledge Graphs (OKG) catalog for ontologies, vocabularies, and taxonomies.
OKG indexes 1800+ semantic resources with metadata sourced from Wikidata. All data is CC0.
Args:
query: Search term (required)
category: Optional thematic category filter
type: Optional resource type filter ("Ontology", "ControlledVocabulary", "Taxonomy")
limit: Maximum results (default: 20)
Returns:
List of resources with title, wikidataId, description, category, homepage, licenses, types
Available categories: fetched dynamically from api.openknowledgegraphs.com at runtime.
Use when: Discovering international ontologies and vocabularies in a domain before aligning with schema.gov.it resources. Pair with find_okg_alignments or compare_coverage_with_okg.
| Name | Required | Description | Default |
|---|---|---|---|
| type | No | Optional resource type filter | |
| limit | No | Maximum number of results (default: 20) | |
| query | Yes | Search term | |
| category | No | Optional thematic category filter (see OKG categories) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already provide readOnlyHint, idempotentHint, etc. Description adds that data is CC0, categories are fetched dynamically, and explains the return format, offering solid behavioral context beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Structured with sections, bullet points, and no filler. Every sentence adds value, including usage context and return explanation.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Despite no output schema, description explains return fields. All 4 parameters are covered, and context (CC0 license, dynamic categories) is provided. Complete for this tool's complexity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Input schema covers 100% of parameters with descriptions. The description repeats the parameter list but adds example values and default (limit: 20). No contradiction, but adds little beyond schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it searches the OKG catalog for ontologies, vocabularies, and taxonomies, which distinguishes it among many sibling search tools like search_concepts and search_in_vocabulary.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use: 'Discovering international ontologies... before aligning with schema.gov.it resources,' and suggests complementary tools (find_okg_alignments, compare_coverage_with_okg), meeting the highest standard.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
suggest_improvementsSuggest ImprovementsARead-onlyIdempotent
Analyze the ontology for structural issues.
Args:
limit: Maximum issues per category (default: 20)
Returns:
possible_cycles: Classes with mutual rdfs:subClassOf
unused_classes: Classes with no instances and no subclasses
properties_missing_domain_or_range: Properties with incomplete domain/range declarations
large_classes_without_scheme: Classes with >1000 instances and no evidence of skos:ConceptScheme membership
Note: Both analyses run in parallel.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate readOnlyHint, idempotentHint, destructiveHint. Description adds value by noting parallel execution and specific return categories, but does not contradict annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with Args, Returns, Note sections. Every sentence adds value, no waste.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given one parameter, no output schema, and complexity of ontology analysis, the description adequately covers return values and parallel execution behavior.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Despite 0% schema coverage, the description fully explains the limit parameter with default value and meaning: 'Maximum issues per category (default: 20)'.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states the tool analyzes ontology for structural issues, listing specific categories (cycles, unused classes, etc.). It distinguishes from siblings like check_overlaps and check_quality by focusing on improvement suggestions.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Usage context is implied ('analyze the ontology for structural issues') but no explicit guidance on when to use versus alternatives or when not to use.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
suggest_new_toolsSuggest New ToolsBRead-only
Analyze usage logs to suggest new specialized tools.
Args: None
Returns:
List of recommendations based on frequently queried types in raw SPARQL
Note: Requires at least 2 queries for the same type to suggest a tool.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is known. Description adds a behavioral constraint (min query count) and explains the analysis source (usage logs), complementing annotations without contradicting them.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Description is concise with only two sentences plus a note. Purpose is stated upfront, and no unnecessary text is present. However, it could be slightly more structured (e.g., listing args and returns explicitly).
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no parameters and no output schema, the description covers the tool's purpose, input condition, and output type (list of recommendations). It omits details like recommendation format or examples, but remains complete enough for a simple tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
No parameters exist, so description is not required to add parameter details. Baseline score of 4 applies as schema coverage is 100% and description adds no redundant information.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states the tool analyzes usage logs to suggest new specialized tools, using a specific verb and resource. It distinguishes itself from sibling tools like 'suggest_improvements' by focusing on new tools from usage data, though it doesn't explicitly contrast them.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Description provides a precondition (requires at least 2 queries for same type) but lacks guidance on when to use this tool versus alternatives like suggest_improvements or analyze_usage. No explicit context for selection.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections. Dates show when Glama detected each change.
47 tool updates
v1.0.0- First observed
analyze_usage - First observed
browse_vocabulary - First observed
check_coverage - First observed
check_overlaps - First observed
check_quality - First observed
compare_coverage_with_okg - First observed
compare_local_with_remote - First observed
describe_resource - First observed
explore_catalog - First observed
explore_classes - First observed
explore_dataset - First observed
explore_external_endpoint - First observed
explore_ontology - First observed
find_external_alignments - First observed
find_okg_alignments - First observed
find_recommended_scheme_for_property - First observed
find_relations - First observed
find_semantic_software - First observed
get_property_details - First observed
get_upload_instructions - First observed
inspect_concept - First observed
inspect_local_concept - First observed
inspect_local_ontology - First observed
inspect_local_property - First observed
list_datasets - First observed
list_identifiers - First observed
list_instances_of_class - First observed
list_linked_endpoints - First observed
list_municipalities - First observed
list_okg_categories - First observed
list_ontologies - First observed
list_properties - First observed
list_provinces - First observed
list_vocabularies - First observed
navigate_skos_hierarchy - First observed
preview_distribution - First observed
query_external_endpoint - First observed
query_local_ontology - First observed
query_sparql - First observed
query_uploaded_store - First observed
recommend_external_endpoints - First observed
resolve_territorial_uri - First observed
search_concepts - First observed
search_in_vocabulary - First observed
search_okg_resources - First observed
suggest_improvements - First observed
suggest_new_tools
TDQS
Many tools have distinct purposes, but there are several overlapping pairs (e.g., query_sparql vs query_local_ontology vs query_external_endpoint; inspect_concept vs inspect_local_concept). The descriptions help differentiate, but with 47 tools an agent may still struggle to select the correct one.
Tool names follow a consistent verb_noun pattern with underscores (e.g., list_ontologies, explore_classes). A few names are longer phrases (find_recommended_scheme_for_property), but overall the pattern is predictable.
At 47 tools, the count is high for a single server. While the domain is broad (semantic catalog, external endpoints, OKG, territorial codes), many tools are specialized. The count is borderline between 'slightly over' and 'too many' for typical use.
The tool set covers a wide range: SPARQL execution, ontology/vocabulary/dataset exploration, quality checks, coverage analysis, external endpoint integration, and OKG catalog interaction. Missing reasoning or classification tools, but the surface is largely complete for the stated catalog purpose.
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- AlicenseAqualityAmaintenanceEnables AI assistants to search, explore, and query any CKAN open data portal through natural language, making public datasets accessible without requiring knowledge of the portal's API.2041457MIT
- FlicenseNot gradedqualityBmaintenanceEnables AI agents to search, explore, and interact with ontologies and semantic resources on AgroPortal via the OntoPortal ecosystem.-
- AlicenseAqualityBmaintenanceEnables LLMs to access and analyze Italian statistical data from ISTAT via natural language queries, supporting dataset discovery, exploration, and data retrieval.92MIT
- AlicenseNot gradedqualityCmaintenanceEnables querying Italy's open data portal (dati.gov.it) via its CKAN API, providing access to thematic categories and datasets.5MIT
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