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

No annotations are provided, so the description carries full burden. It discloses key behaviors: the hold is temporary and unpaid, tickets are not claimed until checkout completes, hold expires automatically, and works only for Wix Events. This goes beyond the input schema.

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 sentences: the first states the main action and result; the second (in caps) highlights critical temporary nature and scope. No wasted words, front-loaded with key 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?

No output schema is provided, but the description states it returns a checkout URL, which is sufficient for the agent to understand the response. The description covers the tool's purpose, constraints, and failure conditions (external events). Could briefly mention how to detect expiration, but overall complete for a reservation tool.

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 baseline is 3. The description adds context about the hold mechanism and limits (max 10 tickets/ticket types), which adds value beyond the schema descriptions. It does not repeat parameter details but complements them with behavioral context.

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 uses specific verbs ('Hold tickets', 'return a checkout URL') and clearly states the tool is for reserving event tickets sold through Wix Events, distinguishing it from external event platforms mentioned in the sibling tools.

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 explicitly states when to use (events sold through this site) and when not (events sold elsewhere like Sympla, Ingresse, Sesc), and provides the alternative of using the event's own ticketUrl. It also includes constraints (max 10 tickets, 10 ticket types) and explains the temporary nature of the hold.

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