Reply to a Google Play review

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

Annotations already declare destructiveHint=true, idempotentHint=true and openWorldHint=true, but they cannot express that the effect is a public-facing change; the description's 'changes the public Play Store listing' is a genuinely additive disclosure. It still omits permission requirements, rate limits, and what happens to an existing reply's history when replaced.

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 short sentences, front-loaded with the action and followed by the consequence; there is no padding or redundant restatement of the title.

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?

With no output schema and annotations covering the safety profile, the minimum is met, but for a public-facing mutation the description should say something about the 350-character reply limit, the edit/publish workflow implied by sibling tools, and what is returned on success.

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% across three required parameters, and the description never mentions any of them. It does not even surface the schema's 350-character cap on replyText, which is a realistic failure mode for an agent, so it fails to compensate for the coverage gap despite the parameters being largely self-describing by name.

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 uses specific verbs ('Publish or replace') on a specific resource ('the developer reply to a review'), making the create-or-update semantics unambiguous. It clearly differs from read-oriented siblings like get_review and list_reviews, though it never names them 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?

There is no when-to-use guidance, no preconditions (e.g. whether an edit must be created/committed first, as several siblings like create_edit/commit_edit suggest), and no alternatives mentioned. The reader must infer context entirely from the tool name.

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