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lacausecrypto

Sports Hub MCP Server

lichess_get_user

Retrieve a Lichess player's public profile with per-variant ratings, played games, and account flags by providing their username.

Instructions

Get a Lichess user's public profile, including per-variant ratings, played games, and account flags.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
usernameYesLichess username (case-insensitive)
Behavior3/5

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

No annotations are provided, so the description must carry the burden. It indicates the profile is public and includes ratings, games, and flags, but does not discuss rate limits, authentication, or error handling. It is adequate but not detailed.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence that clearly and concisely conveys the purpose and included data. It is front-loaded with the key action and resource.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple single-parameter tool with no output schema, the description sufficiently covers what the tool does and what it returns. It does not need additional detail.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, and the parameter 'username' is well-described in the schema (case-insensitive). The tool description adds no additional meaning beyond what the schema provides, so baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb ('Get'), the resource ('a Lichess user's public profile'), and specifics ('per-variant ratings, played games, and account flags'). It effectively distinguishes from sibling tools like lichess_get_users_status and lichess_get_team.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for retrieving a single user's profile but does not explicitly state when to use this tool versus alternatives like lichess_get_users_status. No prerequisites or exclusions are mentioned.

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

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