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

Annotations already declare destructiveHint=true, idempotentHint=true and readOnlyHint=false, so the mutation profile is covered. The description adds one genuinely useful fact beyond them: the request disappears for everyone, not just the caller. It omits permissions requirements, whether an already-answered request can be withdrawn, and what happens to existing replies.

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?

A single front-loaded sentence with the verb and identifier first, no filler. The em-dash clause is short but uses an undefined term ('Taskriz'), so brevity comes at a small cost in clarity.

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?

For a destructive, non-open-world mutation with no output schema, the definition covers what it does and its blast radius but not side effects, failure modes, or authorization needs. An agent could call it, but not predict edge-case behavior.

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%; agent_id is documented in the schema and request_id is not. The description only restates that request_id selects the request to withdraw, adding no format, sourcing, or lookup guidance beyond the parenthetical. Baseline 3 for the coverage level is appropriate.

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?

States a specific verb and resource ('Withdraw a request') plus the key identifier ('by request_id'), which separates it from siblings like acknowledge and send_request. The trailing clause 'it leaves everyone's Taskriz' is opaque (unexplained product term) but the core operation is unmistakable.

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?

Gives a usable selection condition — withdraw a request 'that no longer needs answering' — which implicitly contrasts with answering/acknowledging. However, it never names the alternative sibling (acknowledge) or states when recall is not permitted (e.g., already answered, already recalled).

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