MPC-PoC-1-EchoServerToolsbasicas
Server Quality Checklist
Latest release: v0.1.0
- Disambiguation5/5
Each tool performs a completely distinct operation: echo returns input unchanged, add performs numeric addition, reverse flips a string's character order. There is no overlap or ambiguity between them.
Naming Consistency5/5All three tool names are single lowercase verbs in a consistent imperative style: echo, add, reverse. The pattern is uniform and predictable.
Tool Count4/5Three tools is a reasonable size for a basic PoC utility server. While slightly minimal, it stays within a well-scoped range and avoids being either overly thin or bloated.
Completeness4/5For a simple echo server with basic utilities, the set covers its apparent purpose without glaring gaps. The operations are self-contained, though there is no clear domain model requiring CRUD coverage.
Average 3.6/5 across 3 of 3 tools scored.
See the Tool Scores section below for per-tool breakdowns.
- No community issues in the last 6 months
- 3 commits in the last 12 weeks
- No stable releases found
- No critical vulnerability alerts
- No high-severity vulnerability alerts
- No code scanning findings
- CI status not available
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How is the quality score calculated?
The overall quality score combines two components: Tool Definition Quality (70%) and Server Coherence (30%).
Tool Definition Quality measures how well each tool describes itself to AI agents. Every tool is scored 1–5 across six dimensions: Purpose Clarity (25%), Usage Guidelines (20%), Behavioral Transparency (20%), Parameter Semantics (15%), Conciseness & Structure (10%), and Contextual Completeness (10%). The server-level definition quality score is calculated as 60% mean TDQS + 40% minimum TDQS, so a single poorly described tool pulls the score down.
Server Coherence evaluates how well the tools work together as a set, scoring four dimensions equally: Disambiguation (can agents tell tools apart?), Naming Consistency, Tool Count Appropriateness, and Completeness (are there gaps in the tool surface?).
Tiers are derived from the overall score: A (≥3.5), B (≥3.0), C (≥2.0), D (≥1.0), F (<1.0). B and above is considered passing.
Tool Scores
- Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full behavioral burden. It states the core operation, but does not clarify whether a new string is returned or the input is mutated, nor how Unicode or special characters are handled. The behavior is basically clear but under-specified.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single sentence with no filler, front-loaded with the action verb and a clear object. This is appropriately sized for such a simple tool.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness3/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a one-parameter tool with an output schema, the description covers the essential operation, but it lacks explicit usage guidance relative to siblings and does not fully define the parameter. It is minimally adequate rather than robust.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema has 0% description coverage and the description only indirectly refers to 'un string' without naming the parameter `text`. With a single required parameter, the meaning is inferable, but the description does not explicitly compensate for the schema gap.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose4/5Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb ('Invierte') and a concrete resource ('los caracteres de un string'), so the purpose is unambiguous. It does not explicitly mention siblings, but the operation is clearly distinct from echo and add.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines2/5Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance is given about when to use this tool versus echo or add. There are no stated conditions, prerequisites, or exclusions; usage must be inferred entirely from the name and the described operation.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It states the core behavior and that it returns a result, but it does not discuss edge cases, error behavior, or side effects. Given the simplicity of the operation, this is adequate but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
One short sentence is front-loaded and contains no filler. Every word earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a two-number addition tool with an output schema and no nested objects, the description is nearly complete. It clearly states inputs and the fact that a result is returned, though it omits trivial edge-case details.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description needed to compensate. It only says 'dos numeros', which restates the number types already in the schema without explaining the roles of a and b or any ordering concerns. The parameter names remain opaque.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description uses the verb 'Suma' and the object 'dos numeros' to state exactly what the tool does. This clearly distinguishes it from sibling tools echo and reverse, which cover different operations.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines2/5Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance is given about when to choose add over alternatives. The description does not mention echo or reverse, nor any condition or context for using this tool, leaving the agent to infer.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description must carry the transparency burden. It clearly discloses that the message is returned without modifications, which covers the core behavioral trait of an echo operation. It does not go into edge cases or error behavior, but none are essential for this simple tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
A single, front-loaded sentence with no filler. It conveys the entire behavior efficiently and earns every word.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a trivial one-parameter tool with an output schema present, the description is nearly complete: it identifies input, behavior, and result. It lacks explicit usage guidance, but the simplicity of the tool lowers the burden, so only a minor gap remains.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5Does 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 does by linking the single 'message' parameter to the returned value, clarifying that the parameter is the exact input echoed back. This adds semantic meaning beyond the bare schema property name and type.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb ('Devuelve') and resource ('el mismo mensaje recibido'), making the tool's identity operation unmistakable. It also naturally distinguishes itself from siblings like 'reverse' and 'add' by emphasizing that no modification occurs.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines3/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies the appropriate use case: invoke this tool when the exact original message must be returned unchanged. However, it does not explicitly mention alternatives or state when not to use this tool, leaving the guidance implicit rather than direct.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
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