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

Adds real behavioral context beyond annotations: edits invalidate affected approvals and the assembled draft, and the operation is gated on a human-supplied code. Annotations cover the safety profile (idempotent, non-destructive) and the idempotencyKey schema text covers replay semantics, so the remaining gap is only the success/failure outcome behavior, which is minor.

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 tight sentences: purpose and required input first, consequence second, safety guardrail last. Nothing redundant and every sentence carries information the agent needs.

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 7-param mutation with no output schema and low schema coverage, the description covers the critical code/challenge path and invalidation consequences but leaves several required params and the result behavior unexplained. Adequate but with clear gaps.

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 only 29%; the description meaningfully explains the critical 'code' parameter and its provenance, plus implies the challenge-based flow behind challengeId. But fieldIds, expectedRevision, includeDefinition, and challengeId get no added meaning in either the schema or the description, so it only partially compensates for the low coverage.

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?

Specific verb (Confirm) plus resource (contribution review) and the key prerequisite (code from the authenticated human reviewer), which clearly separates it from request_/cancel_/resend_contribution_review siblings. It does not name a sibling explicitly, so it stops short of a 5.

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?

States the condition for use (you must already have the code supplied by the authenticated human reviewer) and adds two explicit exclusions: do not retrieve the human's email and do not invent a code. It implies the request_contribution_review prerequisite but never names that sibling or states the when-not-vs-alternative case, keeping it below 5.

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