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

Annotations already establish readOnlyHint, idempotentHint, and openWorldHint, so safety is covered. The description adds real substance beyond that by enumerating the signals it inspects and noting it 'Returns findings for that page', giving the agent a sense of the operation's output character.

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?

Front-loaded verb, one dense sentence plus a brief return note, with no filler. The second sentence 'Returns findings for that page' overlaps slightly with the first, a minor redundancy that keeps it just short of perfect.

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 whose annotations cover the safety profile, the description is largely sufficient. However, with no output schema, 'Returns findings' is vague about the shape of results, and it never addresses how this differs from run_citation_check, leaving a gap in routing context.

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?

There is a single parameter with 100% schema description coverage ('The full page URL to check'), so the schema fully documents it. The description reinforces the single-URL scope but adds no syntax, format, or validation detail beyond what the schema provides. Baseline 3 applies.

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?

Names a specific verb (check) and resource (a single page's citation readiness) and enumerates what it evaluates: clear answers, headings, metadata, authorship, freshness. The scope qualifier 'a single page' is precise. It does not, however, distinguish itself from the sibling run_citation_check or list_citations.

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 'a single page' implies the intended granularity versus a broader check, but there is no explicit when-to-use statement, no exclusion of alternatives, and no mention of the sibling run_citation_check. Usage is left to inference.

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