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

With no annotations, the description carries the full behavioral burden, and it does so well: it discloses that the tool is read-only on Sellular's side and writes nothing itself. It also clarifies that the agent is expected to apply the generated fixes manually, though it does not describe the response format or any rate-limit behavior.

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?

The description is dense but every sentence earns its place: purpose and deliverables are front-loaded, the target user and workflow are stated, and the alternative tool is called out. No filler or redundant restatement of the tool name exists.

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 tool with one parameter and no output schema, the description explains the deliverable content, where files belong in the source tree, the intended workflow, and the read-only behavior. It could be more explicit about the exact response shape, but the agent has enough context to invoke it correctly.

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 100% and the url parameter already has a clear description ('A domain (example.com) or full URL to build fixes for'). The tool description adds the qualifier that the site must be public and that fixes target failing checks, but it does not need to add more meaning beyond the schema.

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 names a specific action and resource: turn a public site's failing SEO/AI-discoverability checks into ready-to-apply fixes, with concrete deliverables like robots.txt, sitemap.xml, and head snippets. It also differentiates from the sibling seo_audit_summary by noting that summary is for diagnosis only.

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 explicitly states the intended context: coding agents inside the site's own repository who will write files, insert snippets, and deploy. It also gives a clear alternative condition: run seo_audit_summary first when only the diagnosis is wanted, making the when-to-use decision unambiguous.

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