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

With no annotations, the description carries the full burden, and it only hints at a state precondition ('open request'). It does not say whether closing is reversible, what happens to pending responses, whether the caller needs a specific permission, or what the result looks like. For a mutation tool this is a substantial gap.

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 zero filler; the key constraint (ownership) appears before any secondary detail, so the description can be read in one pass.

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?

A mutation tool with no annotations, no output schema, and a completely undocumented parameter needs considerably more than one sentence. Side effects, preconditions, and failure modes are all absent.

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 0% and the schema only declares request_id as a plain string. The description adds nothing about expected id format, where to obtain it, or what identifies a valid target, so it fails to compensate for the missing schema documentation.

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 (request) plus an ownership constraint ('that you created'), which lets an agent distinguish this from create_request, list_requests, and respond_to_request. It never names a sibling explicitly, but the verb/resource pairing is unambiguous.

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?

The ownership clause implies when this is applicable (requests you authored), but there is no explicit statement of when not to use it, nor any pointer to the sibling tools that also act on requests. Usage is inferable rather than stated.

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