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

Annotations only say it is not read-only and not destructive; the description goes further by disclosing the consequences: correctness verdict, the key, explanation, Renown change, and the building's new level. It does not say whether resubmitting for the same question is rejected or what happens with a stale batchId, which keeps it below a 5.

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 action and followed by the return payload. No filler whatsoever.

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, the description usefully enumerates what comes back, which is exactly what an agent needs to chain results. The remaining gap is the undocumented questionId and no note on idempotency or error behavior for invalid batch/question pairs.

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 67%: chosen and batchId are documented in the schema, but questionId is completely bare in both schema and description. The description adds no parameter meaning at all, so it neither compensates nor subtracts.

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: submitting a player's answer to a question that has already been dealt. It is distinguishable from deal_questions and answer_review by the "submit answer" framing, though it never names 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?

"A dealt question" implies the prerequisite flow (call deal_questions first) and the batchId schema note reinforces it, but there is no explicit when-to-use or when-not-to-use guidance versus siblings like answer_review or look_up_answer.

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