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

No annotations provided, so the description carries full disclosure burden. It discloses that returned times are in the venue's timezone, which is a key behavioral trait. However, it does not mention read-only nature, error conditions, return structure, or pagination. Adequate but leaves gaps.

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?

Two sentences plus a clause: extremely concise, front-loaded with purpose, then instructions and a critical warning. Every part earns its place with no redundancy.

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?

No output schema and moderate complexity. The description explains the tool's core function and a key nuance (timezone), but does not cover return format, error handling (e.g., invalid date or unavailable service), or what happens if no slots exist. Adequate for a simple query but not comprehensive.

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 repeats schema info for date and serviceId. It adds value by reminding to use the same place_slug and noting timezone relevance, but does not provide new constraints or enrich meaning beyond the schema.

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 verb ('Get'), resource ('available time slots'), and context ('Wix Bookings, bookable service, given date'). It distinguishes from sibling tools like list_booking_services (which lists services, not slots) and create_booking (which creates a booking).

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 specifies prerequisites (serviceId from list_booking_services, same place_slug) and provides a clear usage context. It warns about timezone differences. Missing explicit when-not-to-use alternatives, but the context is sufficient for correct tool selection.

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