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

Annotations already declare destructiveHint=true and idempotentHint=true; the description adds valuable context beyond them: auth is required, the action is free, no further answers are accepted, and there is no reopening. The irreversibility note meaningfully enriches what the hints imply.

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?

Two tight sentences: purpose and scope front-loaded, with auth/cost and irreversibility details packed efficiently into the parenthetical and second clause. 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?

For a single-parameter mutation with a rich annotation set and no output schema, the description covers the important behavioral facts (auth, cost, terminal irreversibility). Only the 'id' argument's semantics are left entirely to the schema, a minor gap.

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 description coverage is 0%, and the description never mentions the single 'id' parameter, so it adds no meaning over the schema. With only one clearly-named uuid parameter the cost is low, keeping this at the baseline rather than penalizing further.

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 (close) and resource (a request of your operator), making the mutating action unambiguous. It doesn't name or contrast against siblings (e.g., post_request, get_request), but the verb alone clearly separates it from read/list/post operations.

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 clear condition for use ('a request you no longer need') and points to the recovery path ('post a new request instead'). It stops short of explicit when-not or named-alternative routing, but the intended context is clear.

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