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

readOnlyHint=true and openWorldHint=false already establish this as a safe, self-contained read, so the bar is low. The description adds that the payload includes non-goals and current status, which is useful content context, but says nothing about return format, size, or whether the status can change.

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, no padding, with the content inventory front-loaded and the usage trigger second. The list-of-clauses opening is slightly clunky but every element maps to real returned content.

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 no-param, no-output-schema overview tool, the description covers scope and usage adequately. It could say more about how the overview is organized or whether it is static, but nothing essential to invoking it is missing.

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?

The tool takes zero parameters, so per the rubric the baseline is 4. There is no argument surface for the description to clarify.

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 enumerates exactly what the tool returns (what Recoup checks, who it's for, requirements, non-goals, current status), so an agent knows this is a documentation/overview resource rather than an operational one. It is clear but never explicitly frames itself against the siblings (pricing, exposure, supported sources), which the content list only implicitly covers.

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 gives a concrete trigger: 'Use this when someone asks how to check that refunds an AI support agent promised were actually issued.' That is a real when-to-use condition, but there are no exclusions or pointers to the sibling tools for pricing, exposure, or sources.

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