x402_publisher_verdict

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

Annotations indicate read-only and open-world. The description adds critical behavioral details: rate limits (10 free calls/day/IP), cost structure (1 credit for full), additional data for full tier, and the need for token/auth. No contradictions.

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?

The description is relatively long but well-structured, starting with the purpose, then detailing tiers. Every sentence adds value, though some minor redundancy could be trimmed. Still, it is clear and informative.

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 the complexity (two tiers, pricing, rate limits, auth) and no output schema, the description covers prerequisites, output expectations, and links to get credits. Slightly lacking in exact output format, but sufficient for an agent to use correctly.

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 description adds meaningful context: tier parameter is explained with free vs paid, example domain given, and required domain is emphasized. The description significantly enhances understanding beyond the 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?

The description clearly states the tool provides a signed trust verdict on a specific x402 publisher, listing possible outcomes (actively settling, quiet, etc.), and distinguishes it from sibling tools like x402_settlement_verdict.

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 description explains the domain requirement, tier options with pricing and rate limits, and mentions the need for a token for the full tier. It does not explicitly state when not to use it, but provides clear context for appropriate use.

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