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

Annotations already declare readOnlyHint=true and destructiveHint=false, and the description usefully reinforces this by stating no booking is created. However, it says nothing about what the tool actually returns (text instructions? links? forms?) or any follow-up action required to complete a quote request.

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?

A single front-loaded sentence with no filler, sized appropriately for a zero-argument helper tool. It could be marginally sharper by naming the return type, but every word earns its place.

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 no parameters and no output schema, the description carries the burden of explaining what an agent gets back and what to do next, and it omits both. It conveys the intent (get quote-request guidance without booking) but leaves the agent guessing about the response content.

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?

The tool takes zero parameters, so there is nothing for the description to clarify beyond the schema; baseline 4 applies. The description correctly does not waste words on non-existent inputs.

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 says the tool covers 'how to request a verified ... quote', which implies it returns instructional content rather than data, but it never states that explicitly (e.g. 'returns step-by-step instructions'). It is distinguishable in spirit from the listing siblings list_charter_coaches and list_private_cars, but the differentiation is only implied, not stated.

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?

The phrase 'without creating a booking' implies the context in which to use it (quote-only enquiries), but there is no explicit when-to-use, when-not-to-use, or pointer to the sibling listing tools. An agent must infer the routing decision.

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