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

No annotations are provided, so the description carries the full behavioral burden, and it largely doesn't. It hints that output includes '改善建議' (improvement suggestions), but discloses nothing about fetching an external site, permissions, rate limits, or failure behavior for an unreachable/nonexistent domain.

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?

A single, front-loaded sentence with a bracketed category prefix, then the resource list and the deliverable. Nothing is wasted, though the category tag is slightly meta rather than functional.

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 1-parameter tool with no annotations or output schema, the description adequately conveys what is examined and that recommendations are returned, but leaves URL input format and behavioral/failure details unspecified.

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 the single 'url' parameter is undocumented in the schema. The description mentions the target is a 網站 (website), implying a URL, but gives no format guidance (full URL vs. domain, scheme requirements), so it only partially compensates for the coverage gap.

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 (檢查/check) and enumerates the concrete resources examined: robots.txt, Sitemap, llms.txt, and named crawlers (Googlebot, GPTBot, ClaudeBot, etc.). An agent can understand the scope clearly. It does not, however, differentiate itself from close siblings like seo__test_robots_txt or llms__check_ai_crawler_access, which cover subsets of the same ground.

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 description describes what gets checked but never states when to use this composite tool versus the narrower siblings, nor any prerequisites (site must be reachable, URL format, etc.). Usage is only inferable from the resource list.

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