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

The annotations already declare readOnlyHint, idempotentHint, openWorldHint=false, and destructiveHint=false, covering the safety profile. The description adds that the output includes records, checks, next step, and guides, which enriches understanding of the return content beyond annotations – though the output schema may already document this, so the added value is moderate.

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 what is returned, followed by when to use it. No redundant or wasted text.

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?

Given the tool has a clear output schema, annotations that cover safety, and enum parameters that are self-explanatory, the description provides adequate context. It could be improved by differentiating from siblings, but it is largely complete for an agent to call it correctly.

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%, but both parameters are enums with fully listed values in the schema itself. The description mentions 'one stage' and 'one preparation topic,' mapping to stage and need, but adds no semantic detail about the enum meanings. Baseline 3 is appropriate since the enums are self-documenting.

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: it 'returns the records to gather, the checks to make, the next step and the relevant guides' for a refund preparation checklist. It is clear what the tool does, but it does not explicitly distinguish itself from sibling tools like read_refund_guide or get_statement3_requirements, aside from the checklist framing.

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?

It says to use it 'when someone asks what to prepare or check,' which gives clear context. However, it does not name alternatives or state when not to use it, stopping short of the explicit alternative routing seen in top-scoring definitions.

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