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

Annotations already declare readOnlyHint=true, so the safety profile is covered, and the description does not contradict them. It adds nothing beyond that, however: no note on what a not-found id returns, error behavior, or the shape of the single record, which is the kind of context that would earn a higher score.

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?

A single short sentence with zero waste, and the verb plus resource is front-loaded. It is efficient, though the brevity edges toward under-specification rather than tight completeness.

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 one-parameter, read-only lookup with 100% schema coverage and annotations covering safety, the minimal description is close to sufficient. It still omits any usage context (when to fetch a confirmation directly) and return-value expectations, since no output schema exists.

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 coverage is 100% and the id parameter is fully documented in the schema itself, including its source (billomat_list_confirmations). The description adds no syntax, format, or filtering detail beyond what the schema provides, so the baseline 3 applies.

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 names a specific verb and resource ("Get one order confirmation"), and "one" hints at single-record retrieval versus a list. It does not, however, distinguish this tool from the many sibling get_* tools or from billomat_list_confirmations beyond that single word, leaving scope to inference.

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 explicit when-to-use guidance or named alternative. The only routing hint (the id comes from billomat_list_confirmations) lives in the schema, not the description, so an agent gets no stated condition for choosing this over list_confirmations or other get_* siblings.

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