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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the description's job is to add something else — and it does, by disclosing that entries are documentation-checked only and nothing was installed or audited. That trust caveat materially affects how an agent should present the result and is not derivable from structured fields.

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, front-loaded with the verb and resource, with no filler. The second sentence's two clauses are near-restatements of each other ('documentation-checked only' / 'nothing installed or audited'), a small redundancy that reinforces rather than wastes space.

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 one-parameter read tool with an output schema, full annotation coverage, and a stated data-trust caveat, almost nothing an agent needs is missing. The only gap is behavior on a missing or invalid id, which the description does not address.

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 100% and the id's format example lives in the schema, so the description adds little parameter-level detail. Its only contribution is provenance ('as returned by search_gear'), which is useful but minor; baseline 3 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 ('Get one Gearlist entry by its id') and scopes it to a single record, which cleanly separates it from the plural, query-based sibling search_gear. It also ties the id back to search_gear's output, so the agent knows exactly which tool produces the input.

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 phrase 'as returned by search_gear' implicitly prescribes the workflow: search first, then fetch details by id. It does not explicitly say to avoid this tool for bulk retrieval or what to do if the id is unknown, but the routing context is clear enough for a single-record getter.

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