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

Annotations already cover the safety profile (readOnlyHint, idempotentHint, destructiveHint=false, openWorldHint=false), so the description only needs to add incremental behavior. It does add two useful traits: the result is 'paginated' and the optional sitemapUrl is restricted to the site's domain or subdomain. It does not disclose default page size or ordering, keeping it short of a 5.

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?

Two sentences, front-loaded with the core verb and resource, then the behavioral facts. The parenthetical about domain/subdomain is dense but informative rather than wasteful; nothing extraneous, though it could be tightened.

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 no output schema, the description carries the burden of describing what comes back, and it does state the return content (page URLs) plus pagination. It does not describe the response shape, item ordering, or what an empty/absent sitemap yields, so it is strong but not fully complete.

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 50%: 'site' and 'sitemapUrl' are documented in the schema, while 'limit' and 'offset' are bare. The description's 'paginated' hints at those two parameters but adds no bounds or semantics (e.g., max 100, default page size) beyond what the schema already states for the covered half. Baseline 3 is appropriate.

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 ('Lists the page URLs in the site's sitemap') and adds the scope constraint that the sitemap URL must live on the site's own domain or a subdomain. The link to 'update_settings internalLinks' tells the agent exactly what this data feeds into, which no sibling tool duplicates.

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?

Frames the use case clearly by calling the output 'the raw material for update_settings internalLinks', implying when an agent should reach for it. However, it names no explicit alternative and states no when-not conditions, so it falls short of full routing guidance.

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