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

Annotations declare readOnlyHint=true and destructiveHint=false, but the description says successful inspections cost 0.009 USDC and failed inspections are not charged. Charging a fee is a side effect that contradicts the read-only annotation, so the description contradicts the structured behavioral hints.

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?

One front-loaded sentence with three semicolon-separated clauses; every clause adds distinct information: scope, failure billing, and price. There is no wasted wording.

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?

No output schema exists, and the description does not explain what the inspection checks, what constitutes a failed inspection, or what result is returned. For a paid pre-payment inspection, this leaves the agent without enough context to interpret the outcome.

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 0% and the lone 'url' parameter has no schema description. The protocol list weakly suggests the URL is an agent endpoint in one of those protocols, but it does not explain what URL should point to or what forms are accepted.

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 names a specific verb and resource: pre-payment agent inspection across named protocols. It is clear enough to distinguish from generic tools, though it does not explicitly differentiate itself from siblings such as payment_preflight or counterparty_risk_preflight.

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 phrase 'Pre-payment' implies use before paying an agent, but there is no explicit when/when-not guidance or mention of alternatives such as payment_preflight, try_service, or verify. The agent must infer timing from the title-like clause rather than from stated usage rules.

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