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

Annotations only declare the safety profile (readOnlyHint=false, destructiveHint=false); the description adds real behavioral detail beyond that: answers are withheld, no Renown is earned, and consecutive correct answers retire a miss. That explains what state changes and what is at stake. It does not say what a call returns or whether a batch must be closed with end_batch, which keeps it from 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?

Three short clauses with the core action front-loaded and the 'WITHOUT answers' constraint immediately adjacent to it. The scoring and domain notes follow in priority order with no filler. Only minor tightening would improve it.

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 tool whose siblings include answer_review, deal_questions, and end_batch, the description never explains the workflow — what it returns, how many questions, or that answering probably goes through answer_review. Combined with the undocumented `size` parameter and no output schema, gaps remain that the agent must guess at.

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 0%, so the description carries the full burden, and it only partially compensates. 'Optionally limit to one domain' gives the meaning of domainId, but `size` (1–20) — presumably how many questions are dealt — is never explained, and neither parameter's interaction with the max is described.

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 states a specific verb and resource — 'Deal missed questions to retry' — which separates it from deal_questions (new questions) and get_misses (a list). The 'WITHOUT answers' clause further sharpens what is being returned. It stops short of naming the sibling it should be contrasted with, leaving the agent to infer the distinction.

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?

'Optionally limit to one domain' gives a scoping hint, and 'missed questions to retry' implies the review use case. But there is no explicit statement of when to call this instead of deal_questions, answer_review, or get_misses, and no prerequisites or exclusions. Usage is inferable rather than stated.

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