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

Annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered. The description adds genuinely new behavior: the 31-day maximum window between start_date and end_date, and the paged nature of the response, plus the underlying POST endpoint. It stops short of noting auth requirements or what happens when the window is exceeded.

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?

Three short sentences, no redundancy, with the resource and the critical 31-day constraint front-loaded before the paging note and endpoint detail.

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 filtered list tool with no output schema, the description covers what is queried, the date-window restriction, and that results are paged, which is enough to invoke it correctly. It would be stronger if it sketched the returned fields or explicitly tied paging to the offset/next_offset contract, but nothing essential is missing.

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 every parameter (limit, offset, end_date, start_date, location_id) is already documented in the schema, including YYYY-MM-DD formats and the next_offset paging hint. The description only restates the date-range semantics and adds the 31-day constraint, matching the baseline for high-coverage schemas.

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 gives a specific verb and resource ('List the reservations that were cancelled') plus scope ('between two dates, at most 31 days apart'), which clearly sets it apart from the active-reservation siblings by virtue of the 'cancelled' qualifier. It never explicitly names a sibling such as gingr_list_reservations or gingr_list_owner_reservations to contrast against, so it falls short of the top mark.

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?

Usage is implied by the description — an agent can infer it should call this when it needs cancellations in a date window — but there is no explicit when-to-use guidance, no statement of when-not-to-use it, and no named alternative for related listing needs.

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