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

Adds real context beyond the annotations: it returns an approval link, nothing is posted until the user approves, execution may run immediately under an Always-allow setting, and policy checks still apply. It does not cover what happens on rejection or how a replacement interacts with the existing reply, which the destructiveHint=true annotation implies is relevant.

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 compact sentences, front-loaded with the action and the approval gate, then the exception and the policy caveat. No filler.

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 two-parameter mutation with annotations and no output schema, the description covers the human-in-the-loop flow, the bypass path, and the policy constraint well. The remaining gap is parameter meaning and character-limit guidance, which the schema fails to supply.

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%, so the description needed to carry the parameter burden and does not. Neither review_id (UUID format) nor reply_text (1-4000 chars) is mentioned or constrained anywhere in the prose.

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: asking the user to approve posting or replacing a reply to a Google review, which is clearly distinct from the delete/reply-drafting siblings by name. It never explicitly names draft_review_reply as the companion tool, so the differentiation is implied rather than spelled out.

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?

Usage is implied rather than stated: this is the approval-gated posting path, and the 'Always allow' note hints at a faster path when permission is pre-granted. There is no explicit guidance on when to call it versus draft_review_reply first, nor any exclusion criteria.

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