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

Annotations already declare readOnlyHint=true, openWorldHint=true, and destructiveHint=false, covering the safety profile. The description adds context about the database size, suppliers, and that it returns available package offers, but it does not disclose result ordering, result count behavior, or how filters are combined.

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 description is relatively short but repetitive: 'pakkerejser' and 'bedste' appear multiple times, and the third sentence largely restates the first. It front-loads the core purpose but includes marketing phrases like 'største og mest komplette database' that do not add technical value.

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 37 optional parameters and no output schema, the description provides only a high-level purpose. The rich input schema compensates by documenting every parameter with defaults and examples, and annotations cover safety semantics. Still, the description gives no guidance on query construction, default behavior, or result interpretation, so it is only minimally complete.

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 100%, so the schema already documents all 37 parameters, including defaults, enums, and examples. The description adds only the general phrase 'based on search criteria' and no parameter-specific meaning, which meets the baseline but nothing more.

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 clearly identifies search as the verb and package travel offers from Denmark as the target resource, even naming the major suppliers. This makes it easy to distinguish from the sibling search_flights: one searches package holidays, the other flights.

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 description gives a clear use case: find the best available package trips from Denmark based on search criteria. It names suppliers and scope, so an agent knows when the tool is relevant, but it does not explicitly mention when not to use it or contrast it with search_flights.

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