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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds that both dates are mandatory and what fields are returned, but says nothing about the cancelled/deleted behaviour that the schema exposes (include_deleted, only_cancelled) or about pagination defaults.

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 sentences, scoped and front-loaded with the resource and the date constraint. Slight redundancy in repeating the YYYY-MM-DD format that the schema already enforces keeps it below a 5.

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 seven parameters, no output schema and read-only annotations, the description usefully enumerates the returned fields and flags the required date window. It could be more complete about how cancelled bookings are handled and how this differs from semble_list_bookings, but nothing critical to a correct call 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 is already documented, including the deleted/cancelled semantics. The description's only parameter content – both dates required, YYYY-MM-DD – merely restates the schema and required array, adding no syntax or edge-case detail.

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 names the resource ('bookings (appointments)'), scopes it to one patient, and enumerates the fields carried back (doctor, location, type, status). This implicitly distinguishes it from the sibling semble_list_bookings (broader listing), though it never names that sibling explicitly.

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 only implied via 'of one patient' – an agent can infer you need a patient_id and a date window. There is no explicit when-to-use statement, no exclusion, and no pointer to semble_list_bookings or semble_get_booking as alternatives.

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