Athlete profile

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

No annotations are present, so the description must carry behavioral weight. It explains the scope ('across every logged activity') and the output categories, which gives some transparency about aggregation behavior. However, it does not clarify default behavior when the optional athlete parameter is omitted, response shape, permissions, or whether anything beyond reading occurs.

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, compact sentence with no filler. It front-loads the main output categories and closes with the important scope qualifier ('across every logged activity'). Every phrase contributes meaning.

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 simple tool with one optional parameter and no output schema, the description names the main content areas but leaves some gaps. The term 'trophy case' is not explained, and the behavior when athlete is omitted is not stated. Overall it is adeuate but not fully self-sufficient.

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%, and the schema already explains that athlete filters to one athlete. The tool description adds no detail about how the athlete filter interacts with 'every logged activity,' but because the schema is complete, a baseline of 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 clearly communicates that this tool returns an athlete profile built from career totals, current streak, personal records, and trophy case information. It does not use an explicit verb like 'retrieves' or 'returns,' but the tool name plus the resource content make the purpose clear. It is distinct from raw activity listing, though it doesn't explicitly contrast with sibling tools.

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 call this tool versus list_activities, recap, snapshot, or leaderboard. The description implies an aggregate/profile use case, but it never states exclusions, alternatives, or prerequisites such as needing a selected athlete.

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