garmin_training_status

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

Annotations already establish readOnlyHint and openWorldHint, so the description need not repeat the safety profile. It adds the 'as of a date' scoping, which gives a small behavioral hint, but it does not disclose behavior for a null date, data freshness, or authentication requirements.

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?

One concise sentence front-loads the core data points and the date qualifier with no filler or redundancy. Every word adds value.

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 read-only tool with a single optional parameter and an output schema, the description gives the core purpose and the parameter's role. However, it lacks details like the meaning of an omitted date, and it does not address overlap with garmin_vo2max, making it adequate but not complete.

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 coverage is 0% — the date parameter has no description. The description clarifies that date is the as-of date, but it does not specify format, allowed values, or null-date behavior, so it only partially compensates for the missing schema information.

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 explicitly names the data returned: training status, acute/chronic load balance, and VO2 max, qualified by date. This distinguishes it from simpler VO2 max tools by adding training status and load balance, though it does not use an explicit verb like 'retrieve'.

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 use this tool versus alternatives like garmin_vo2max or garmin_training_readiness. There are no exclusions or conditions mentioned, so an agent must infer when to choose this tool.

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