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

The readOnlyHint=true annotation already declares this a safe read, so the description carries a lower burden. It adds the underlying endpoint (GET /customers/{id}/bookings) and the optional date scoping, but says nothing about pagination behavior or result volume beyond what the schema's pageNavigationToken parameter already implies.

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 short sentences with no filler, and the primary scope (one customer's bookings) is front-loaded. The trailing REST endpoint reference is compact and useful for agents mapping to the Bookeo API.

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 only 7 params, full schema coverage, and a readOnly annotation covering the safety profile, the description supplies what is needed to invoke the tool. The absence of return-shape or pagination narrative is a minor gap given the richly documented schema, and no output schema exists to offset it.

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 (dates, paging, expandParticipants) is already documented. The description only reiterates optional date filtering and adds no syntax or format detail beyond the schema, making the baseline 3 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?

The description states a specific verb (List) and resource (one customer's bookings), scoping it to a single customer with an optional date range. This implicitly separates it from the sibling bookeo_list_bookings, but it never names that sibling explicitly, so the differentiation is left to inference.

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?

There is no explicit when-to-use guidance and no mention of alternatives. The phrase 'one customer's bookings' hints that the tool is customer-scoped rather than business-wide, but the agent must infer that bookeo_list_bookings covers the other case.

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