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

No annotations are supplied, so the description carries the full disclosure burden and delivers almost none of it: nothing about permissions, rate limits, error behavior for unknown products, or what the response contains. "UCP" is used as unelaborated jargon that an agent cannot act on.

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?

It is short and front-loads the main action, so there is no filler to trim. But the brevity comes at the cost of clarity — the "catalog: {id}" fragment reads as a cryptic note rather than a usable specification.

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 a required nested object, no annotations, no output schema, and only half the parameters described, the definition leaves too much unresolved for an agent to call it confidently. It does not compensate for the missing structured information.

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 50%: meta is documented in the schema, but catalog is an undescribed nested object. The description's "catalog: {id}" hints at an identifier yet appears to conflict with the schema's declaration of catalog as an object, leaving the required parameter's actual shape unclear rather than clarified.

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?

"Hent ét produkt" gives a verb (fetch) and a cardinality-restricted resource (one product), which does separate it from a list/search style operation. However, the phrasing is partly in Danish and the trailing fragment "catalog: {id}" muddies what is actually being identified, so an English-speaking agent gets only a rough sense of the operation.

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 versus lookup_catalog or search_catalog, no preconditions, and no note on what happens when the product does not exist. The agent must infer that "ét produkt" means a single-record retrieval and guess at the alternative paths.

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