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

The annotations declare a non-read-only, open-world, non-idempotent, non-destructive operation, so the safety profile is already structured. The description adds genuine behavioral detail by saying unavailable checks are preserved as 'unobservable', which tells the agent how results are reported. But with readOnlyHint=false it never says what is written or persisted, and openWorldHint=true is never elaborated with network/cost implications.

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?

Three short sentences, front-loaded with the action and followed by the constraint and prerequisite. The documentation link is the only element that could be seen as filler, though for an open-world tool it is a reasonable escape hatch.

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?

There is no output schema, and the description never sketches what a recheck returns — what 'native findings' or an 'unobservable' check looks like in the response. Inputs are adequately covered for a two-parameter tool, but the unexplained 'unobservable' concept and absent return shape leave a real gap for an open-world, non-idempotent tool.

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 'previous_audit' is an untyped nested object, so the description carries the burden here. It does add real meaning: the second parameter must be the original audit JSON and the URL must match it. It still leaves the shape and required keys of that audit JSON completely unspecified.

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 states a specific verb and resource: 'Recheck the native findings from a saved audit.' That is far more precise than the title, and 'native findings' plus 'saved audit' narrows the scope. It does not, however, distinguish this tool from the sibling 'reassess_launch', which an agent could easily confuse with a re-run of an existing audit.

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?

It gives a concrete usage window ('after changes are live') and a hard prerequisite ('Requires original audit JSON for the same URL'), which is more than most definitions offer. It stops short of naming alternatives or stating when not to use it — notably it never routes the agent away from 'reassess_launch' when no prior audit JSON exists.

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