carmax_schedule_test_drive

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

With no annotations, the description carries the burden and does well: it discloses that this books a REAL appointment and that omitting confirm yields a non-submitting preview, which is the crucial side-effect distinction for a mutation tool. It omits reversibility/cancellation, permission needs, and error conditions.

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?

Three short sentences, front-loaded with purpose then the real-booking warning, with zero filler.

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?

For a mutation tool with no annotations and no output schema, the description covers the side-effect and the gating parameter, which are the highest-risk unknowns. It does not describe what the preview returns or the implications of the five required customer fields, leaving a modest gap.

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 all eight parameters are already documented, including confirm's preview semantics. The description restates the confirm gate rather than adding new per-parameter detail, so the baseline 3 applies.

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?

States a specific verb+resource+scope: scheduling a test drive appointment at CarMax for a specific vehicle. Clearly distinguishable from the sibling search/detail/offer tools, which do not book appointments.

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?

Explicitly states the confirm:true condition that turns a preview into a real booking, which is the key usage decision. It does not name alternatives or say when a preview workflow should precede booking, so it stops short of full when/when-not guidance.

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