Counterparty credit & conduct score from your own observations (PAID $0.50)

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

Annotations declare readOnlyHint=false and openWorldHint=true, and the description adds genuinely useful behavior beyond that: the exact route, the $0.50 charge, and the x402/base-USDC payment rail. It does not explain why the tool is not read-only (payment side effect) or whether results are deterministic and persisted.

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?

Very short, but the first line merely restates the title verbatim and the second is a technical route/payment string. No sentence is wasted, but the space is spent on duplication plus billing mechanics rather than on the information an agent lacks.

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?

An output schema and annotations exist, so return shape and safety are covered, and cost is disclosed. However, for a paid tool with 0% parameter documentation, the description omits what the inputs mean, what the score range/interpretation is, and when this beats the many sibling reputation tools — a real gap.

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 0% and the description says nothing about the three parameters. It never clarifies what 'identifier' should look like, what 'as_of' controls, or that 'observations' fields are optional and that missing values degrade the score — all of which an agent must know to call it correctly.

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 output (counterparty credit & conduct score) and a key differentiator — it is computed from the caller's own observations rather than a vendor database. It does not name or contrast with the many nearby siblings (v1_agent_reputation, v1_bureau_reputation, v1_sme_screen), so differentiation is implied rather than explicit.

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?

There is no guidance on when to call this versus v1_agent_reputation, v1_bureau_reputation, or other scoring tools, nor on preconditions (payment balance, identifier format). The only contextual note about caller-supplied observations lives in the schema, not the description.

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