book_offer

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

The description adds meaningful behavioral context beyond the annotations: without approval_token the tool only proposes and returns a pending_action_id, and passenger details are fixed by the server's fake-passenger config. This clarifies the approval-gated behavior and data limitations.

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 carry all the essential information, with the critical approval-token conditional front-loaded. There is no filler or redundant restating of the schema.

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?

Given that an output schema exists and annotations already signal mutating/destructive behavior, the description is largely complete: it identifies the required offer_id, optional approval_token, proposal behavior, and passenger limitation. It falls short only in not explaining how the returned pending_action_id connects to approval flows like request_approval.

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 0%, so the description must compensate. It explains the effect of approval_token (proposal vs. booking) and that passenger details cannot be supplied, but it never defines what offer_id refers to or where the offer comes from, leaving a required parameter underspecified.

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 opens with a specific verb and resource: 'Book a new flight.' This clearly distinguishes it from the sibling get/quote/confirm/cancel toolsuation and states the primary action without ambiguity.

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?

No explicit guidance about when to use this tool versus alternatives such as request_approval, quote_cancellation, or confirm_order_change. The intended use must be inferred from the tool name and the phrase 'Book a new flight,' with no exclusions or next-step guidance.

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