player_profile

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

With no annotations, the description carries the full burden and does so thoroughly: it discloses the route is absent from the published declaration, was found by probing, requires no token, and reports response size, field prefixes, avatar double-encoding, null fields, and the fact that only one account was captured so presence of fields is not established.

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 long but each sentence adds non-redundant caveats or response details that matter because there is no output schema. It is front-loaded with purpose and endpoint, and the following detail is grouped logically, though it could be tightened.

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?

Since there is no output schemaFrances, the description fully covers return value shape, encoding quirks, missing fields, and reliability limitations. It also gives a clear parameter meaning and auth expectation, so an agent has enough information to correctly call and interpret the 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?

Schema coverage is 0%, so the description must explain the parameter and does: it clarifies the selector is 'name', not 'username'. It does not expand on valid formats beyond the schema's minLength, but for a single string parameter this is adequate.

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 opening sentence names the exact endpoint and states it returns one account's profile. It also distinguishes the tool from sibling player lookups by explicitly noting the selector is 'name, not username'.

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 about when to use this tool versus the many sibling player_* tools, and there is no explanation of exclusions or alternative routes. The intended use is implicit from the verb and endpoint, but not stated as a decision rule.

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