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

With no annotations, the description carries the full burden and does reasonably well: it discloses the deliverable (signed ProofOfAuditReport, Merkle-anchored), the billing model ($25.00 USDC per call via x402), and a notable failure behavior (refuses with no charge when the source cannot be fetched). It does not cover auth requirements or latency, keeping it short of a 5.

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 well front-loaded: the core deliverable leads, followed by the target scenario, the refusal behavior, and pricing in a parenthetical. Every clause carries information, though the phrasing is compressed enough to require a careful read.

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 complex multi-agent paid audit with no output schema, the description covers the deliverable, the buyer scenario, the cost, and a failure mode. It could say more about what the report contains or how the audit is scoped, but what an agent needs to decide and call is largely present.

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?

One parameter with 100% schema description coverage, so the schema already documents 'task'. The description adds no syntax, format, or constraint detail about that parameter, so baseline 3 applies.

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 resource: a '13-agent coordinated security audit producing a signed ProofOfAuditReport, Merkle-anchored to Base.' The phrase 'not a self-attestation' distinguishes it from the attestation-style siblings, but it does not name specific siblings like security.audit-attestation or security.process-attestation, leaving some overlap ambiguity.

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?

Gives a target scenario ('enterprises that need documented evidence an agent fleet was assessed before deployment') which implies when to use it, but names no alternatives and provides no explicit when-not guidance beyond the fetch-failure refusal case.

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