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

Annotations already declare readOnly, idempotent, non-destructive, and non-open-world behavior. The description adds the useful pagination constraint that pages contain at most five receipts, but does not cover offset behavior, error conditions, or authorization needs.

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 no wasted wording. The page-size detail is useful, though the description is very brief given the parameter documentation gap.

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 simple read-only tool with annotations covering safety, the description is minimally complete: it names the returned entities and page size. However, with 0% schema coverage and no output schema, it does not fully equip an agent to invoke the tool correctly with run_id, question_id, and offset.

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 must compensate but does not. It implies question_id ('one question') and offset/pagination ('Pages contain at most five receipts') only weakly, and does not explain run_id, question_id bounds, or the default/meaning of offset.

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 ('inspect') and resources ('original observed answers and cited URLs') scoped to one question. It is clear what the tool does, but it does not distinguish itself from siblings such as get_results, search_answers, or get_sources.

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?

"Use this to inspect..." gives implied usage context, but there is no explicit guidance on when to choose this tool over alternatives or when not to use it. It leaves the agent to infer the selection criteria.

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