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

Annotations already declare readOnly, idempotent and non-destructive, so the safety bar is met without description help. The description still adds real value beyond them: 'Free' discloses the cost model and the listed status values (received or analysed) reveal the asynchronous two-state lifecycle a caller must expect.

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 return payload is front-loaded in the first clause, immediately followed by the cost note, so the useful information arrives first. The echoed argument JSON is mildly redundant with the schema but small enough not to be wasteful.

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, the description compensates reasonably by naming the returned fields, which is the single most valuable thing it does. However, it omits how to source the report id and what happens for an unknown or still-processing report, leaving gaps for a nested-parameter read call.

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% and the single parameter is a nested object, so the description carries the full burden. It only reproduces the schema shape as `{"path": {"id": "<id>"}}` without saying what the id identifies, what format it takes, or where to obtain it.

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 and resource (read Kelpo's answer to a report) and enumerates the payload (status, answer, verdict per item), which an agent can distinguish from list-oriented siblings. It doesn't name any sibling such as kelpo_my_reports, so the differentiation is left implicit.

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?

The 'Free' note signals this call has no credit cost, but there is no explicit when-to-use or when-not-to-use guidance. The workflow dependency on kelpo_my_reports (where the report id comes from) is never stated; the intended usage is only implied by the description's framing.

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