Crawlora MCP

chesscom_player_tournaments

Read-only

Get a player’s tournament records. The service calls Chess.com’s documented Published-Data API serially. This independent service is not affiliated with Chess.com; do not use results for AI training or dataset creation.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "username": "<username>"
    },
    "name": "chesscom_player_tournaments"
  }
}

Input Schema

Name	Required	Description	Default
`username`	Yes	Required source username.

Output Schema

Name	Required	Description	Default
`data`	Yes	The tool result payload (shape varies per tool; see each tool's docs resource).

Schema Changelog

Changes observed during successful MCP inspections.

AddedNov 13, 2026

TDQS

B3.2/5.0

Behavior3/5

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds genuine context beyond them: upstream calls are made serially (implying slower responses), the service is unaffiliated with Chess.com, and results may not be used for AI training or dataset creation. It still says nothing about response paging, data scope, or failure behavior of the upstream API.

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

Conciseness4/5

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

Three short sentences with the core purpose front-loaded and no filler. The compliance disclaimer is peripheral to tool selection but is short and clearly separated, so it does not dilute the opening.

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

Completeness3/5

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

With one required parameter and an output schema, the definition covers the minimum needed to invoke the tool. It omits what kinds of tournaments are returned (daily vs. live), whether history is complete or paginated, and how it differs from adjacent player-tournament tools, which leaves real ambiguity for a low-complexity but crowded namespace.

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?

Only one parameter exists and schema coverage is 100%, so the schema already carries the meaning of 'username'. The description refers to 'a player' but adds no format hints, optional filters, or resolution behavior beyond what the schema states.

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

Purpose4/5

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

The description opens with a specific verb and resource: 'Get a player's tournament records.' An agent immediately knows the operation and target entity. It does not, however, distinguish this from near-siblings such as sofascore_player_tournaments or chesscom_player_matches, so it stops short of a 5.

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

Usage Guidelines2/5

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

There is no guidance on when to use this tool versus the many sibling tournament tools, no mention of prerequisites, and no exclusions. The only directive is a licensing restriction on the results, which is a usage constraint rather than selection guidance.

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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