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

Annotations already declare a read-only, idempotent, non-destructive, closed-world operation, so the safety profile is covered. The description adds material behavioral context beyond that: the call costs $5,000 USDC and is transacted via x402, which an agent must know before invoking. It stops short of describing output format or length thresholds.

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 short, front-loaded sentences with zero filler: the audit scope leads, and the pricing/rail fact follows as a distinct operational note. Every clause earns its place.

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 single-parameter read-only tool with no output schema, the definition is close to adequate, and annotations plus the price note cover the essentials. Still missing are any hint of what the audit returns or how 'readable length' is judged, which would help an agent set expectations.

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 0% for the single 'text' parameter, so the description must compensate. 'Short landing-page copy' gives a hint about expected input, but it does not document the parameter explicitly or reconcile it with the 24,000-character maxLength, so compensation is only partial.

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), a specific resource (short landing-page copy), and names the four evaluation criteria (clarity, outcome, CTA, readable length), which an agent can act on. However, it does not distinguish itself from the very similar-looking sibling site-copy-review, leaving ambiguity about which auditor to pick.

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 scoping ('short landing-page copy') but no explicit when-to-use, when-not-to-use, or alternative routing, even though site-copy-review appears to overlap heavily. The agent is left to infer selection criteria on its own.

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