book_appointment

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

No annotations are provided, so the description carries the full burden. It discloses the gated feature and error condition but does not describe side effects, permissions needed, or expected success response. For a creation tool, more behavioral context is needed.

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 concise—two sentences that front-load the purpose and add a critical gating condition. No unnecessary words or redundant information.

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 4 required parameters, no output schema, and no annotations, the description lacks important context such as what the tool returns on success, prerequisites (e.g., checking availability), and any rate limits. The gating information is helpful but incomplete.

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 75% (client_id missing description). The tool description does not add any parameter-level information beyond what the schema provides. While the schema itself is reasonably descriptive, the missing client_id description is not compensated.

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 clearly states the tool schedules a single wellness or training appointment for a client with a specific staff member at a specific time. It distinguishes itself from sibling tools like book_client_to_class (books a class) and checkout_shopping_cart (checkout process).

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 mentions the gating condition (MINDBODY_ALLOW_BOOKINGS) and error return if not enabled, but does not provide explicit guidance on when to use this tool versus alternatives like book_client_to_class. The context is implied but not directly stated.

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