x402 trust score for an endpoint (paid)

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

With no annotations, description discloses return fields (trust score, grade, verdict, price, band, flags, breakdown, on-chain stats) and payment behavior (pay-per-call, auto-pay or quote). Lacks details about error handling or time estimates.

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?

Description is thorough but somewhat lengthy. Key information is front-loaded. Could be tightened slightly but remains clear.

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?

Given no output schema, the description fully covers what the tool returns and how it behaves (payment, verdicts). Completeness is high for the tool's complexity.

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 100% with one parameter 'resource'. Description adds example URL and clarifies it is the full URL, adding minimal value beyond 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?

Description clearly states tool returns trust score, verdict, price, and flags for a specific x402 endpoint. Verb 'call' implies evaluation. Distinguishes from siblings by focusing on single endpoint trust score before payment.

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?

Explicitly says 'Call this BEFORE paying an unknown x402 endpoint' and 'One call answers WHETHER and at WHAT PRICE to use an endpoint.' Provides clear context but does not mention alternatives or when not to use.

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