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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is fully covered. The description merely restates the tool's purpose and adds no behavioral context such as return format, pagination behavior, or whether reimbursement requests are included in the same result set. With annotations carrying the safety burden, the description still fails to add meaningful value.

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?

The description is a single, efficient sentence with no wasted words. However, it is under-specified for a tool with three filtering parameters and a close sibling, so its conciseness comes at the cost of actionable detail.

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 and a sibling tool ('get_expenses') that is easily confused, the description should clarify the distinction and what the tool returns. It does neither, leaving the agent without enough context to reliably choose this tool over alternatives or understand the result format.

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 100%, and the schema itself documents all three parameters clearly, including the 'company' parameter with a reference to 'list_companies'. The description adds no parameter semantics beyond what the schema provides, so the baseline of 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?

The description states a specific verb and resource ('Get expense claims and reimbursement requests'), so the basic purpose is clear. However, it does not differentiate this tool from the close sibling 'get_expenses', nor does it explain what distinguishes expense claims from expenses. An agent must infer the distinction from the name alone.

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?

There is no guidance on when to use this tool versus 'get_expenses' or any other sibling. No context is given about prerequisites, typical scenarios, or exclusions. The agent is left to guess based on the tool name.

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