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

Goes well beyond the annotations: it declares the computation is free and deterministic, that there is no LLM or external fetch, that a scoped key is required, and defines an explicit no-auto-retry/attemptId policy. Note the mild tension with readOnlyHint=false for what reads as a side-effect-free static check, but nothing is explicitly contradicted.

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?

Four tight sentences with the purpose front-loaded, then cost/determinism, then auth, then retry policy. Each sentence carries distinct information with no padding.

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?

With annotations covering safety hints and no output schema, the description is nearly complete for a read-style check: purpose, auth, determinism, and retry behavior are all present. The remaining gap is the undocumented structure of the nested input payload.

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?

At 50% schema coverage the description must help, and it does reinforce attemptId semantics (fresh per intended call, retain on uncertain outcomes). However it says nothing about the nested payload fields (openapi, paths), leaving half the parameters undocumented in both schema and description.

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: a static check of OpenAPI 3.0/3.1 authentication and transport declarations. The domain is unambiguous and naturally distinct from the json/csv/webhook siblings, though it never explicitly names or contrasts them.

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 operational guidance ('Requires a scoped key allowing openapi-security', supply a fresh attemptId, never auto-retry) but never states when to choose this over sibling checks or what prerequisite spec state is needed. Usage is implied by the purpose rather than stated.

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