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

Goes well beyond the annotations (which only say not read-only, not destructive, not idempotent). It discloses that reviews publish publicly immediately, are subject to a code of conduct at /conduct.html, don't affect score, and are limited to one per game — all facts an agent needs before writing a public review. The 'one per game' note is especially valuable for a non-idempotent write tool.

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 dense sentences, front-loaded with the precondition 'after a game you finished' and the core action. The final sentence about adding an idea is somewhat under-integrated and is the least essential relative to the schema, but nothing is padded.

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 4-parameter, non-idempotent write with a nested object and no output schema, the description covers when to call, visibility/publication semantics, and the one-per-game constraint. It doesn't say what a successful call returns or what happens if the one-per-game limit is already hit, but the essentials are present.

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 75%, so the schema already documents session_id's origin and the review content, lengths, and rating bounds. The description restates the 1-5 rating and clarifies that feedback may be 'good or bad' and that a suggestion may accompany the review, but it adds no detail about the nested suggestion object's kind/title/body fields. Baseline 3 is appropriate.

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: rate a finished game 1-5 with written thoughts, plus an optional suggestion. That's clearly distinct from get_reviews (read) and start_game/make_move. However, the trailing 'You may add an idea for a new game or feature' collides conceptually with the sibling tool `suggest` without acknowledging it, so an agent can't fully separate the two.

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?

Gives clear timing and preconditions: optional, only after a game you finished, one review per game, and it never affects your score. What's missing is an explicit exclusion relative to `suggest`, which appears to be the dedicated path for game/feature ideas — the overlap is left unresolved.

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