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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description does add one useful fact — the id space covers products, services and appointment types, not just products — but says nothing about behavior on a missing id or what the record contains.

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 nine-word fragment with nothing superfluous, and the resource is front-loaded. It is under-specified rather than bloated, so brevity itself is not the problem.

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 tool with annotations and full schema coverage this is close to sufficient, but the agent is left guessing what distinguishes an invalid id from an id belonging to a different entity type, and whether the response includes related records.

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?

Only one parameter, and the schema already documents it at 100% coverage ('Product id.', minLength 1, maxLength 100). The description's 'by id' repeats the schema rather than adding format, source, or lookup semantics. 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 fragment names the resource (product, service or appointment type) and the retrieval key (id), and 'One' implicitly distinguishes it from the sibling semble_list_products. But there is no verb, so the agent must infer 'retrieve a single record' rather than being told it.

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 statement of when to use this tool, when not to, or any pointer to semble_list_products for browsing versus fetching a known id. The only hint is the word 'One'.

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