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

Beyond the annotations (which already declare a non-read-only, idempotent, non-destructive, closed-world write), it discloses that codes are one-time, bound to the reviewed plan/selection and actor, expire, and reject replays. It also disambiguates the authorization's semantic scope versus content approval or a signature, adding real behavioral context.

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?

Two sentences, front-loaded with the verb, with zero waste. The closing clause distinguishing production authorization from content approval or signature earns its place by preempting a common misinterpretation.

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?

The tool is security-sensitive, fully required (5 params), uses nested objects, and has no output schema; the description covers purpose and behavioral constraints well. However, with 20% schema coverage it leaves important per-parameter structure (challengeId, nested revision/selection) undocumented, so the picture is incomplete for correct invocation.

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 low (20%), so the description must compensate. It adds meaning for code (one-time, hand-supplied) and ties revision/selection to the reviewed plan, but leaves challengeId's role and the nested revision (outputJobId/payloadHash) and selection (accepted/rejected ids) structures unexplained, so the compensation is only partial.

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 (confirm) and resource (production agreement / plan) and sharply bounds its meaning with 'production authorization only, never final content approval or a signature.' That negative scoping distinguishes it from siblings like confirm_review or confirm_document_review, though it does not name a sibling explicitly.

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?

It establishes the precondition clearly: use only a one-time code a person explicitly supplied after reviewing this exact plan and selection, and it enumerates when the call fails (changed plans, other actors, expired codes, replays). No alternative tool is named, so it falls short of the explicit when-not/alternative routing of a 5.

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