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 a non-obvious behavioral constraint the annotations do not: only records from the location the API user is logged into are returned, and it discloses the underlying POST endpoint despite the read semantics. It does not mention result ordering or pagination beyond the schema's limit.

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?

Two compact sentences with the core scope front-loaded, followed by the location caveat and endpoint. Slightly redundant 'Gingr:' prefix on the endpoint line, but otherwise no 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 10-parameter read tool with full schema coverage and annotations, the description supplies purpose, filter dimensions, and the important location-scoping constraint. Return-format details are unnecessary since no output schema is expected to be explained here, though pagination/ordering behavior is left unstated.

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 including the restrict_to enum and limit bounds is already documented in the schema. The description only restates the filter categories (dates, types, pets) and the state list that mirror the schema, adding no syntax or interaction details beyond it. 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?

States a specific verb and resource with an explicit scope ('reservations of one owner'), which cleanly separates it from gingr_list_reservations (all owners) and gingr_list_animal_reservations (one pet). The optional state/dimension filters are enumerated up front, so an agent knows exactly what this returns.

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 scope ('of one owner' plus filterable by dates, types, pets), and the location caveat gives real deployment context. However, it never states when to prefer this over the sibling listers (gingr_list_reservations, gingr_list_animal_reservations) or any prerequisite beyond the owner id.

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