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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds real behavioral context beyond that: results are filtered on arrival date, sorted soonest-first, and an app-scoped Cotlet API key is required. It stops short of pagination/result-limit behavior, so not a 5.

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?

Front-loaded with the core purpose and result shape, with exclusions and auth caveat following. Slightly sentence-heavy with the total definition feeling tacked on, but no wasted filler.

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 read-only list tool with annotations covering safety and no output schema, the description covers what is returned, exclusion rules, ordering and auth needs. Only minor gaps such as pagination or result caps keep it from a 5.

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%, so the schema already documents all four parameters including the arrival-date meaning of from/to. The description reinforces the arrival-date semantics and clarifies that total is the camper's payment, but adds little beyond the schema. Baseline 3 is appropriate.

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 (lists) and resource (confirmed bookings), its scope (date range) and the fields returned (camper, site, dates, guests, total), and explicitly distinguishes itself from list_booking_requests. An agent can tell it apart from the sibling without opening either schema.

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?

Explicitly states what is excluded (booking requests still awaiting an answer) and names the alternative tool that returns those. The date-range filtering and sort order are also given, so selection between this and its sibling is unambiguous.

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