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

Adds genuine behavioral context beyond the annotations: 'Changes invalidate the receipt' explains side-effect semantics, and 'No inferred approval, signature or buyer submission' restricts how the code may originate. The safety profile (idempotent, non-destructive, non-open-world) is already covered by annotations, so this is useful but not rich disclosure of authorization or return behavior.

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?

Three terse sentences, purpose front-loaded, and every clause carries information (verb, input source, prohibition, consequence). No padding or redundancy.

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?

For a required-everything mutation with a nested revision object, 20% schema coverage and no output schema, the description leaves too much unexplained: the identity/versioning semantics of itemId and revision, the role of challengeId, and what the receipt actually is. The agent cannot confidently construct the call from this definition alone.

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 only 20% – just idempotencyKey is documented in the schema itself. The description loosely gestures at 'code' but says nothing about itemId, challengeId, or the nested revision object (outputJobId, payloadHash), all of which are required. The description does not compensate for the coverage gap.

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 verb and resource: 'Record one file review', with the key input named ('the code explicitly provided by the reviewer'). This is meaningfully more specific than siblings like confirm_review or confirm_contribution_review, but it does not explicitly differentiate itself from them.

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?

Conveys an important usage constraint ('using the code explicitly provided by the reviewer. No inferred approval, signature or buyer submission'), which tells the agent it may not fabricate a code. However, it never says when to call this versus request_document_review or other confirm_* siblings, leaving the routing to inference.

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