get_training_trends

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

No annotations are provided, so the description must fully disclose behavior. It lists output fields but does not mention side effects, authentication needs, rate limits, or that it is read-only. The inclusive date range is noted, but deeper behavioral traits are missing.

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 sentence with no extraneous information, making it efficient. It could be improved by front-loading the action (e.g., 'Retrieve training trends...') but remains concise.

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?

The tool has a simple structure with 2 parameters and no nested objects. The description covers the return values and input format adequately, but lacks details on aggregation logic or default behaviors. It is complete enough for a straightforward retrieval tool.

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 schema has 0% coverage, so the description adds value by specifying the date format (YYYY-MM-DD) and that the range is inclusive. This clarifies the intended input beyond raw schema types.

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 lists specific metrics returned (training status, readiness, VO2max, etc.) for a date range, clearly indicating the tool's function. It distinguishes from sibling tools like get_activity_detail or get_daily_health_metrics by focusing on aggregated training trends over a period.

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 states the tool is for a date range with inclusive YYYY-MM-DD format, providing clear context for when to use it. However, it does not mention alternatives or when not to use it, relying on the agent to infer from sibling names.

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