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 says nothing beyond the audit categories. It doesn't disclose that the tool fetches a live page (network side effects), whether the operation is read-only, how long a full audit takes, or any rate/cost limits.

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 the audit scope clearly appended. Slight redundancy in 'Site Audit: Audit a website', but nothing extraneous.

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 annotations and no output schema, the description must describe behavior fully and does not. For a network-hitting audit tool with two ambiguous optional inputs, an agent still lacks enough to invoke it confidently or predict its result shape.

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 nominally 100%, so the baseline is 3, but the schema texts are tautological ('Url to process', 'Domain to process'). The description lists audit dimensions without clarifying whether url, domain, or both must be supplied (0 required parameters makes this ambiguity meaningful).

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 (audit) and resource (website) and names the audit dimensions (SEO, performance, security), so the agent knows what comes back. However, it never distinguishes itself from close siblings such as x402-page-audit, x402-domain-audit, x402-url-inspect, or x402-ai-web-analyze, leaving overlap unresolved.

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?

There is no guidance on when to reach for this versus the many adjacent audit/inspect/analyze siblings, no prerequisites stated, and no mention of when a url input is preferred over a domain input despite both existing in the schema.

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