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

With no annotations provided, the description carries the full behavioral burden and does substantial work: it declares the tool is paid, states the exact price and accepted payment chains, confirms no account or API key is required, and commits that failed calls are not charged. It stops short of rate limits, latency, or what a partial/failed audit response looks like.

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?

Front-loaded with the most decision-relevant fact ("Paid.") followed by scope, then cost and auth terms. Sentences are terse and each carries information, though the trailing raw endpoint URL is more operational noise than selection signal.

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 paid tool with no annotations and no output schema, the description covers scope, price, payment rail, auth requirements, and refund behavior — enough to call it safely. The one gap is that the audit result format must be inferred from the enumerated check list.

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 single `url` parameter is documented with an example, so the description needs to add little. It does not clarify tolerance for bare domains vs full URLs or handling of redirects, leaving the schema to do the work — baseline 3 is appropriate.

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?

"Full website audit in one call" states a specific verb and resource, and the enumerated contents (security headers grade, on-page SEO issues, SSL certificate, tech stack, response time) make the deliverable concrete. It implicitly distinguishes itself from buy_audit_security and buy_audit_seo by being the bundled "full" version, but never names those siblings.

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?

"In one call" hints that this is the combined option versus the narrower buy_audit_security and buy_audit_seo tools, and the "$0.10 USDC" price gives a cost-based selection signal. However, there is no explicit when-to-use/when-not guidance, so an agent must infer that cheaper single-dimension siblings exist and when to prefer them.

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