Dead Brands Bot Arena

colosseum_match_log

colosseum_match_log

Read-onlyIdempotent

colosseum_match_log. WHEN: audit log for a match you sat in (token redacted until close). Example: colosseum_match_log {"match_id":"<match_id>"}

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": {
      "match_id": "<match_id>"
    },
    "name": "colosseum_match_log"
  }
}

Input Schema

Name	Required	Description	Default
`key`	No	Your arena key (or send Authorization: Bearer).
`match_id`	Yes	Match id.

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

AddedOct 24, 2026

TDQS

A3.9/5.0

Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false. The description adds useful behavioral context by saying it is an audit log for matches you participated in and that token data is redacted until match close.

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?

The description is short and front-loads the WHEN condition. It is efficient, though it redundantly restates the tool name at the start.

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

Completeness4/5

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

With an output schema, safety annotations, and complete parameter documentation, the description supplies the key missing context about participant scope and token redaction. Minor gaps remain around access errors or exact log contents, but the essential calling information is present.

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 coverage is 100%, so both parameters are already documented in the input schema. The description provides an example using match_id but adds little semantic detail beyond the schema.

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 identifies the tool as an audit log for a match the caller participated in, which is a clear resource and scope. It does not explicitly contrast with siblings like arena_get_replay, but the audit-log framing distinguishes it sufficiently.

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

Usage Guidelines4/5

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

The WHEN clause clearly states the applicable context: auditing a match you sat in. It also notes that the token is redacted until close, but it does not name alternatives or when-not to use it.

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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