faceit_getPlayerFromLookup

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

No annotations provided, so description must carry full burden. It mentions endpoint and that it returns player details in a single call, but lacks details on authentication, rate limits, error handling, or side effects. Acceptable but not thorough.

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?

Description is clear and front-loaded with purpose. It uses multiple sentences but each adds value. Could trim the endpoint line as it's redundant with the tool name, but overall efficient.

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?

No output schema, so description should cover what 'Player details' entails. It lacks details on return fields, pagination, or error scenarios. Given the tool's simplicity, it covers the basics but leaves agents uncertain about what to expect.

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 description must compensate. It lists and briefly describes each parameter (nickname, game, game_player_id) and implies that at least one is needed. However, it doesn't specify formats, accepted game values, or interaction between parameters, leaving some ambiguity.

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?

Clearly states 'Retrieve player details' and distinguishes from siblings: 'Prefer this over searchPlayers when the nickname is exact. Prefer getPlayer when you already have the player_id.' The verb and resource are specific.

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?

Explicitly tells when to use: 'when you have an exact nickname OR a game-specific id' and gives alternatives for different scenarios. This provides clear decision criteria.

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