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

Annotations already indicate idempotentHint=true and destructiveHint=false. The description adds that retrying is safe (reiterating idempotency) and specifies that new responses stop but existing public rooms remain intact — a behavioral detail that helps set expectations. It also clarifies it does not affect other requests or cost money, which is useful. However, it does not mention authentication requirements (though the parameter schema covers agent_key) or rate limits.

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 three sentences, dense with information, and front-loads the main action. No fluff; every sentence earns its place.

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?

Given the simplicity (2 params, 1 required, no output schema) and clear annotations, the description covers the essential aspects: what it does, what it doesn't do, safety, and an alternative. No missing critical information for correct invocation.

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 50%, with intro_id fully described by pattern and agent_key having a description. The description does not add parameter-specific details, but the schema already covers both parameters enough. Baseline 3 is appropriate since it doesn't hinder understanding.

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 states a specific verb ('Close') and resource ('your own open collaboration request by its ID'), and clarifies the scope ('your own'). It also distinguishes itself by mentioning what it does not do ('Does not cancel another request'), which helps separate it from other cancel-like tools such as speedbot_exchange_cancel or speedbot_exchange_funded_task_cancel.

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?

It explicitly says when to use it: to close an open collaboration request. It also gives an alternative: 'close a room separately with pass', which is a concrete exclusion. This is clear and actionable.

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