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

With no annotations, the description carries the transparency burden; it does disclose that the call is pay-per-call and costs 7.00 USDC on Base, which is important financial context. It does not disclose response behavior, failure modes, auth, or rate limits, so the disclosure is partial.

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 two short sentences with the pricing and core function front-loaded. 'Pay-per-call' and the explicit price are slightly redundant but both are useful, so there is no meaningful waste.

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 simple one-parameter tool with no annotations and no output schema, the description covers the essential selection and invocation facts: what it audits, how many sites, that they must be public, and the cost. It does not describe the returned audit format, but the low complexity keeps this from being a major gap.

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?

The input schema has 100% description coverage for the only parameter (5 absolute https URLs), so the baseline is 3. The description adds the 'public sites' qualifier but no additional parameter syntax or constraints 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 operation (audit) with a clear resource (5 public sites) and the objective (AI-agent readiness). The '5 ... at once' wording differentiates it from the sibling agent_site_audit.

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 phrase 'audit 5 public sites at once' implies the intended use case, but the description does not explicitly say when to choose this tool over agent_site_audit or what conditions make the single-site variant preferable. No alternatives or exclusions are mentioned.

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