book_client_to_class

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

With no annotations, the description carries the full burden of behavioral disclosure. It states the gating condition and that the action results in a real reservation, but lacks details on idempotency, side effects, or whether the booking is irreversible.

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 extremely concise with three sentences, each serving a purpose: stating the action, noting the gating condition, and clarifying the real-world impact. No extraneous 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?

For a tool with 2 parameters and no output schema, the description covers the core purpose and a key constraint (env var gating), but omits details about parameter validation, failure modes like full classes, or expected behavior when successful.

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%, and the description fails to explain the parameters 'client_id' and 'class_id' beyond the implied meaning from the action. No details on format, source, or constraints are provided.

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 action: enrolling a client into an upcoming studio class. The verb 'enroll' and the resource 'client into class' are explicit. It distinguishes itself from sibling tools like 'book_appointment' which likely books appointments, not classes.

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 tool is gated behind an environment variable and returns an error if not enabled, but does not provide explicit guidance on when to use this tool versus alternatives like 'book_appointment' or scenarios where it should not be used.

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