get_menstrual_data

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description must fully disclose behavioral traits. It only states the action without mentioning read-only nature, authentication, rate limits, or what the returned data contains. This under-disclosure for a tool without annotations leaves gaps for the agent.

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—one sentence with no wasted words. It is front-loaded with the action and scope. However, it is perhaps too minimal for a tool with no other documentation, but structure is clean.

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 low complexity (one parameter, no output schema) and the absence of annotations, the description lacks completeness. It does not explain what 'menstrual cycle data' includes (e.g., flow, symptoms, cycle phase) or any constraints, leaving the agent with insufficient context for proper use.

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% (the 'date' parameter has a clear description in the schema). The tool description adds no extra meaning beyond the schema, earning the baseline score of 3. No contradictions or additional context are provided.

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 retrieves menstrual cycle data for a specific date, using a specific verb ('Get') and resource, and the scope is defined by the date parameter. Among siblings, no other tool targets menstrual data, so differentiation is automatic.

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 when to use the tool (to retrieve menstrual data for a date) but does not provide any usage guidance, exclusions, or alternatives. For a unique tool with no close siblings, this is adequate but lacking explicit direction.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.