Get menstrual cycle day view

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

Annotations already establish that this is a read-only, idempotent, non-destructive operation, so the description does not need to restate safety. It adds useful behavioral context by describing what the response contains, including daily log entries, cycle summary data, pregnancy weight goals, and optional baby movement data.

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 a single front-loaded sentence that moves from purpose to returned content with little wasted text. It is slightly dense, but the structure makes the main use case clear immediately.

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?

There is no output schema, so the description usefully outlines the main returned sections and notes pregnancy-specific optional data. Combined with fully documented parameters and safety annotations, this is complete enough for selection and invocation, though it does not discuss missing-data behavior, permissions, or privacy considerations.

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 all five parameters are already documented in the schema. The description reinforces the meaning of optional baby movement data and cycle data but does not add much detail about todayDate, calendarDate, reducedResponse, or includeAnalysis beyond what the schema provides. Baseline 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 states a specific resource and scope: a detailed view of one menstrual-cycle day, including daily log, cycle summary, and pregnancy-tracking data. The 'one day' scope implicitly distinguishes it from the sibling summary tool, so an agent can tell what it returns without opening the schema.

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 framing it as a single-day detailed view and noting pregnancy-tracking content, but it does not explicitly say when to use this versus garmin_get_menstrual_cycle_summary or other wellness tools. The context is clear enough to infer the main use case, but no alternatives or exclusions are named.

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