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

Annotations already convey idempotency and non-destructiveness, and the description adds the margin policy condition and 'free quote' outcome. However, it does not clarify whether the tool has side effects (readOnlyHint is false), what happens on policy failure, or whether it writes anything, leaving some behavioral ambiguity.

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 a single, front-loaded sentence that includes the key action and condition. Every word earns its place, with no redundant or filler content.

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 deeply nested schema and absence of an output schema, the one-line description is insufficient. It does not explain what constitutes a 'complete verification request', what the margin policy is, what the quote contains, or how this relates to sibling tools, leaving significant gaps for an agent to use it 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 description coverage is 0%, and the description mentions no parameters. The schema contains complex nested objects like 'intent' with 'request', 'spend_policy', and 'precheck_receipt_digest', but the description offers no guidance on their meaning or relationships, failing to compensate for the lack of schema descriptions.

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 states a clear verb ('Validate') and resource ('complete verification request'), and specifies the outcome ('return a free quote') conditioned on margin policy. This distinguishes it from the sibling verify_evidence by focusing on the pre-purchase quote step, though it does not explicitly name alternatives.

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 implies a use case (obtaining a free quote before commitment) and a condition (margin policy passes), but it provides no explicit guidance on when to choose this tool over siblings like verify_evidence or prepare_verify_evidence_purchase. There are no stated alternatives or exclusions.

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