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

No annotations are provided, so the description fully covers behavioral traits: nothing is charged automatically, payment is required via the returned checkout_url, and unpaid holds expire in ~30 minutes. This is comprehensive for a booking tool.

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 two concise sentences with no fluff. It front-loads the action and key constraints, making it easy to scan.

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 6-parameter tool with no output schema, the description covers the critical workflow: payment link, expiration, and confirmation requirement. The return value (checkout_url) is mentioned, and the behavioral details are sufficient.

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 coverage is 100%, so baseline is 3. The description adds context for 'tier' (different prices and types) and 'slot_start' (must be from list_consultation_slots), but does not elaborate on other parameters. It meets the baseline adequately.

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 reserves a consultation slot and provides a Stripe payment link, with explicit distinction from sibling 'list_consultation_slots'. The verb 'reserve' and resource 'consultation slot' are precise.

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 explains the workflow: choose a slot from list_consultation_slots, then book via this tool. It clarifies that booking is confirmed only after payment and that unpaid holds expire. It could explicitly state when not to use, but the context is adequate.

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