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

With no annotations, the description carries the burden and does well: it discloses the $99 USDC/x402 payment on eip155:8453, the async job_id plus free result_url pattern, and that a signed EIP-712 attestation is produced over all measurements. It stops short of stating timeout behavior, what happens on failed payment, or whether partial results are retained.

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?

Dense but front-loaded: price and mechanism bracket first, then scope, then output shape, then async contract. Every clause carries information an agent needs before paying for a call.

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 paid, async, multi-check tool with no output schema and no annotations, the description supplies cost, payment rail, output type and retrieval path. The notable gap is that it never points at the job_result sibling for polling, which an agent needs to actually collect the verdict.

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%, so the baseline is 3, and the description genuinely adds consequence-level meaning: store=true triggers checkout checks, pages must actually answer, and expect_text strings must appear and feed the verdict. It does not explain max_response_ms, but the schema covers it adequately.

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 and composite resource: full signed delivery verification covering website, SEO, security basics, optional checkout, and client acceptance criteria, emitting one verdict plus an EIP-712 attestation. That composite-plus-attestation scope implicitly separates it from single-purpose siblings like test_website, seo_full_audit and verify_attestation, though none are named.

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 delivery-acceptance framing ('the client's acceptance criteria') and the pass/partial/fail verdict imply when to reach for this tool, and the price is disclosed up front. However, it never says when to prefer cheaper siblings such as site_audit_full, evaluate_deliverable or the individual test_* checks instead, nor any exclusions.

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