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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered elsewhere and there is no contradiction. The description adds only the operation ID and a pointer to describe_operation, saying nothing about pagination, filtering behavior, or what a list response contains.

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 first two sentences are verbatim duplicates of each other, which is pure waste. The only non-redundant content, the operation ID and the describe_operation pointer, is tacked on at the end rather than front-loaded.

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?

This is a list endpoint with a nested free-form query object, no parameter documentation and no output schema, so the description carries the full explanatory burden and delivers none of it. An agent would have to call describe_operation first to learn anything actionable.

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 schema itself is opaque: a free-form 'query' object with additionalProperties and an empty 'params' object. The description supplies no parameter meaning at all, merely redirecting the agent to describe_operation for native schemas, which leaves the agent unable to construct a correct call from this definition alone.

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 does nothing but restate the endpoint path 'GET /api/impairment/tests' twice, and the title already says the same thing. An agent can infer it lists impairment tests rather than fetching one by ID, but that inference comes from the URL shape, not from any stated verb+resource in prose.

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?

There is no statement of when to call this versus the obvious sibling get_impairment_tests_by_id, nor any prerequisite or filter context. The only routing hint is the pointer to describe_operation for request schemas, which is meta-tooling advice rather than usage guidance for this operation.

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