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

No annotations are provided, so the description carries the burden: it discloses the full scope of the audit (robots.txt, AI-crawler policy, llms.txt, JSON-LD/OG, /.well-known/x402, /openapi.json, sitemap, meta) and the scoring semantics (0-100 plus letter grade). 'Audit'/'score' makes the read-only nature clear, but it omits operational traits such as whether it is idempotent, rate-limited, or requires auth, and no return structure is described.

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 with the core promise (score 0-100 + grade) before the long enumeration, and the alternatives sentence is last where it belongs. The component list is dense but each item earns its place by defining audit scope; the only cost is a slightly run-on single sentence.

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 single-URL read-only audit with no output schema, the description supplies what an agent needs: the scale, the graded output, the checked signals, and the sibling alternatives. Minor gap is the absence of any note on response shape beyond the numeric score and letter grade.

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?

With one parameter at 100% schema description coverage ('Any URL on the site to audit (origin is derived from it)'), the schema already does the heavy lifting. The description adds no further parameter meaning, so the baseline of 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?

States a specific verb (Score) plus resource (AI readiness of a website) and defines the output shape ('0-100 with a letter grade'), then enumerates the exact signals evaluated. It explicitly distinguishes itself from check_robots_sitemap and seo_audit, so an agent can pick it apart from siblings without opening any schema.

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 explicit when-to-use ('the bundle to run before/after making a site agent-friendly') and names two alternative tools with the conditions that select them (raw robots/sitemap contents, classic search SEO). This is the strongest possible routing guidance.

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