Quote Trip

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

The description discloses meaningful behavior beyond the annotations: the quote includes daily rate, insurance plan, 11.5% CA tax, and deposit hold, and the insurance fee is only a demo charge, not issued coverage. This complements the readOnlyHint and idempotentHint annotations without contradicting them.

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?

The description is compact and front-loads the formula and quote type before the plan options and caveat. The 'Pilot' typo is a minor readability issue, but the description remains focused with no wasted words.

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 an output schema and readOnly/idempotent annotations present, the description covers the important behavioral specifics: cost formula, tax, deposit hold, and demo insurance. It does not address car/start/end parameter formats or compare explicitly to sibling tools, but it is still sufficiently complete for the agent to call it correctly.

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 usefully documents the plan parameter's allowed values ('full | liability | decline') and clarifies how cost components fit together. However, it leaves car, start, and end semantics to inference, with no format or meaning beyond their identifiers.

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?

It names a specific action ('exact checkout quote'), the exact resource being quoted, and the financial inputs that compose the quote. This clearly distinguishes it from sibling tools like availability_check or fleet_list.

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 description makes the intended use clear: produce a precise checkout price in USD cents. It does not explicitly discuss alternatives or when not to use this tool, but the context is strong enough that an agent can infer the right scenario.

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