get_chess_player_profile

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

With no annotations provided, the description carries the full burden. The word 'public' implies read-only access and no authentication, which is useful behavioral context. However, it does not disclose rate limits, error behavior, or response shape, so transparency is only minimal.

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 concise sentence with no wasted words. The action and resource are front-loaded, making it easy to parse quickly.

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 one-parameter read-only lookup, the description is adequate for invocation. However, with no output schema or sibling guidance, an agent would not know what the profile contains or why to choose this over get_chess_player_stats, leaving notable gaps.

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% description coverage, and the only parameter, 'username', is documented only by its name and type. The description's phrase 'by username' confirms the parameter's role but adds no format, validation, or additional meaning beyond what the schema already shows.

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 states the action ('Get') and the exact resource ('public profile for a Chess.com player') with the lookup mechanism ('by username'). It is specific and unambiguous, though it does not explicitly differentiate from the sibling tool get_chess_player_stats beyond the resource type itself.

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 provided about when to use this tool versus get_chess_player_stats. There are no conditions, exclusions, or alternative scenarios mentioned, leaving the agent to infer selection purely from the tool name.

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