garmin_summary_report

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

With no annotations provided, the description must disclose behavioral traits itself, and it does usefully list the returned metric categories and period semantics. However, it does not mention whether an authenticated Garmin session is required, which is relevant given the garmin_login and garmin_resume_session siblings, nor does it state side effects; this appears to be a read-only report operation but that is not explicit.

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 compact and front-loaded: purpose first, then parameter semantics, then output scope. The metric list is somewhat long but earns its place by communicating exactly what the summary contains, with no meaningless filler.

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?

Parameter semantics and output scope are well covered, and the presence of an output schema reduces the need to explain return values. Still, the description lacks explicit guidance on session/authentication requirements and does not differentiate this tool from similarly named sibling tools like garmin_daily_summary or garmin_stats.

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%, and the JSON schema provides no enum constraints, but the description fully documents both parameters: period with four explicit values and end_date with format and default behavior. This adds critical meaning beyond the structured 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 states a specific verb and resource: 'Generate a comprehensive summary of all essential biomarkers and activity stats,' and elaborates with a concrete list of included metrics and period options. However, it does not explicitly distinguish itself from sibling tools such as garmin_daily_summary or garmin_stats, so some overlap risk remains.

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 parameter usage for period and end_date, including allowed period values and the default end date, which gives an implied use context. It does not explicitly explain when to choose this tool over garmin_daily_summary, garmin_stats, or other siblings, nor does it state any exclusion criteria.

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