Calculate age from birthdate.
| Name | Required | Description | Default |
|---|---|---|---|
| as_of | No | Calculate age as of date (YYYY-MM-DD) | |
| birthdate | Yes | Birthdate (YYYY-MM-DD) |
| Name | Required | Description | Default |
|---|---|---|---|
| as_of | No | ||
| error | No | ||
| age_years | No | ||
| birthdate | No | ||
| age_months | No | ||
| total_days | No | ||
| total_weeks | No |
Changes observed during successful MCP inspections. Dates show when Glama detected each change.
Output schema / $defs / AgeResponseAdded value: +{
+ "properties": {
+ "age_months": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Months"
+ },
+ "age_years": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Years"
+ },
+ "as_of": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "As Of"
+ },
+ "birthdate": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Birthdate"
+ },
+ "error": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Error"
+ },
+ "total_days": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Days"
+ },
+ "total_weeks": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Weeks"
+ }
+ },
+ "title": "AgeResponse",
+ "type": "object"
+}Output schema / $defs / app__routers__time_utils__AgeResponseRemoved value: -{
- "properties": {
- "age_months": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Months"
- },
- "age_years": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Years"
- },
- "as_of": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "As Of"
- },
- "birthdate": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Birthdate"
- },
- "error": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Error"
- },
- "total_days": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Days"
- },
- "total_weeks": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Weeks"
- }
- },
- "title": "AgeResponse",
- "type": "object"
-}Output schema / x-fastmcp-top-level-schemaPrevious value: -"app__routers__time_utils__AgeResponse"New value: +"AgeResponse"Output schema / $defs / AgeResponseRemoved value: -{
- "properties": {
- "age_months": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Months"
- },
- "age_years": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Years"
- },
- "as_of": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "As Of"
- },
- "birthdate": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Birthdate"
- },
- "error": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Error"
- },
- "total_days": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Days"
- },
- "total_weeks": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Weeks"
- }
- },
- "title": "AgeResponse",
- "type": "object"
-}Output schema / $defs / app__routers__time_utils__AgeResponseAdded value: +{
+ "properties": {
+ "age_months": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Months"
+ },
+ "age_years": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Years"
+ },
+ "as_of": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "As Of"
+ },
+ "birthdate": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Birthdate"
+ },
+ "error": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Error"
+ },
+ "total_days": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Days"
+ },
+ "total_weeks": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Weeks"
+ }
+ },
+ "title": "AgeResponse",
+ "type": "object"
+}Output schema / x-fastmcp-top-level-schemaPrevious value: -"AgeResponse"New value: +"app__routers__time_utils__AgeResponse"Output schema / $defs / AgeResponseAdded value: +{
+ "properties": {
+ "age_months": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Months"
+ },
+ "age_years": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Years"
+ },
+ "as_of": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "As Of"
+ },
+ "birthdate": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Birthdate"
+ },
+ "error": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Error"
+ },
+ "total_days": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Days"
+ },
+ "total_weeks": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Weeks"
+ }
+ },
+ "title": "AgeResponse",
+ "type": "object"
+}Output schema / $defs / app__routers__time_utils__AgeResponseRemoved value: -{
- "properties": {
- "age_months": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Months"
- },
- "age_years": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Years"
- },
- "as_of": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "As Of"
- },
- "birthdate": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Birthdate"
- },
- "error": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Error"
- },
- "total_days": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Days"
- },
- "total_weeks": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Weeks"
- }
- },
- "title": "AgeResponse",
- "type": "object"
-}Output schema / x-fastmcp-top-level-schemaPrevious value: -"app__routers__time_utils__AgeResponse"New value: +"AgeResponse"Output schema / $defs / AgeResponseRemoved value: -{
- "properties": {
- "age_months": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Months"
- },
- "age_years": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Years"
- },
- "as_of": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "As Of"
- },
- "birthdate": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Birthdate"
- },
- "error": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Error"
- },
- "total_days": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Days"
- },
- "total_weeks": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Weeks"
- }
- },
- "title": "AgeResponse",
- "type": "object"
-}Output schema / $defs / app__routers__time_utils__AgeResponseAdded value: +{
+ "properties": {
+ "age_months": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Months"
+ },
+ "age_years": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Years"
+ },
+ "as_of": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "As Of"
+ },
+ "birthdate": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Birthdate"
+ },
+ "error": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Error"
+ },
+ "total_days": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Days"
+ },
+ "total_weeks": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Weeks"
+ }
+ },
+ "title": "AgeResponse",
+ "type": "object"
+}Output schema / x-fastmcp-top-level-schemaPrevious value: -"AgeResponse"New value: +"app__routers__time_utils__AgeResponse"Output schema / $defs / AgeResponseAdded value: +{
+ "properties": {
+ "age_months": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Months"
+ },
+ "age_years": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Years"
+ },
+ "as_of": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "As Of"
+ },
+ "birthdate": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Birthdate"
+ },
+ "error": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Error"
+ },
+ "total_days": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Days"
+ },
+ "total_weeks": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Weeks"
+ }
+ },
+ "title": "AgeResponse",
+ "type": "object"
+}Output schema / $defs / app__routers__time_utils__AgeResponseRemoved value: -{
- "properties": {
- "age_months": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Months"
- },
- "age_years": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Years"
- },
- "as_of": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "As Of"
- },
- "birthdate": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Birthdate"
- },
- "error": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Error"
- },
- "total_days": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Days"
- },
- "total_weeks": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Weeks"
- }
- },
- "title": "AgeResponse",
- "type": "object"
-}Output schema / x-fastmcp-top-level-schemaPrevious value: -"app__routers__time_utils__AgeResponse"New value: +"AgeResponse"Output schema / $defs / AgeResponseRemoved value: -{
- "properties": {
- "age_months": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Months"
- },
- "age_years": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Age Years"
- },
- "as_of": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "As Of"
- },
- "birthdate": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Birthdate"
- },
- "error": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "title": "Error"
- },
- "total_days": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Days"
- },
- "total_weeks": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "title": "Total Weeks"
- }
- },
- "title": "AgeResponse",
- "type": "object"
-}Output schema / $defs / app__routers__time_utils__AgeResponseAdded value: +{
+ "properties": {
+ "age_months": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Months"
+ },
+ "age_years": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Age Years"
+ },
+ "as_of": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "As Of"
+ },
+ "birthdate": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Birthdate"
+ },
+ "error": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Error"
+ },
+ "total_days": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Days"
+ },
+ "total_weeks": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "title": "Total Weeks"
+ }
+ },
+ "title": "AgeResponse",
+ "type": "object"
+}Output schema / x-fastmcp-top-level-schemaPrevious value: -"AgeResponse"New value: +"app__routers__time_utils__AgeResponse"Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
There are no annotations, so the description carries the full burden of behavioral disclosure. It only restates the operation and says nothing about the age unit, date handling, leap years, invalid input, or default as-of behavior; the optional 'as_of' semantics are left to the schema.
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?
Single sentence with no filler or redundant phrases; it is easy to parse. It does not waste tokens, though its brevity comes at the cost of detail scored elsewhere.
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 tool with full schema coverage and an output schema, the main missing context is the relationship to calculate_age and the default behavior of as_of. The description is minimally viable but not complete enough to ensure correct selection among 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?
The input schema already documents both parameters with formats (YYYY-MM-DD) and role, so the description adds little. The baseline of 3 applies because schema description coverage is 100%.
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 names a concrete verb ('Calculate'), a resource ('age'), and its input ('birthdate'). However, the sibling list contains a near-identical calculate_age tool, and nothing in the description distinguishes calculate_age_2 from 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?
No guidance is given on when to choose this tool over calculate_age, nor on when the optional as_of parameter matters. The agent must infer usage from the bare statement, which is insufficient given the ambiguous sibling.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
Many tools have overlapping purposes, such as multiple random generators (random_integer, random_number), duplicate hashing functions (hash_md5, md5_checksum), and near-identical tools (compare, compare_2, compare_decimals). The sheer number of tools and lack of clear boundaries make it difficult for an agent to differentiate.
Naming is highly inconsistent. There are duplicate tools with different names (camel_case vs to_camel_case, slug vs slugify), arbitrary suffixes like '_2', and mixing of patterns (e.g., generate_password vs password_entropy). No clear convention is followed.
With 572 tools, the server is massively overpopulated for any coherent purpose. It includes trivial endpoints (true_endpoint, null, hello_world) and numerous duplicates, far exceeding a well-scoped utility set.
While the server covers many domains (math, strings, dates, colors, etc.), the presence of duplicate and trivial tools indicates a lack of thoughtful curation. There are gaps in basic operations (e.g., no dedicated file or network tools), and many tools are redundant.