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

The annotations already declare destructiveHint=true, and the description adds meaningful update semantics: only supplied fields are sent and price cannot change after tickets are sold. It does not cover permissions or reversibility, but it goes beyond the annotation.

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?

It is two compact sentences plus the API path, all front-loaded and free of repetition. Every element contributes information useful for invocation.

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?

The tool is complex with 17 parameters, but the schema is fully described and no output schema exists. The description supplies the key behavioral constraint and the endpoint, making it sufficiently complete, though it could mention permissions or error behavior.

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 the schema already documents all 17 parameters. The description still adds semantic value by clarifying partial-update behavior and the post-sale price restriction for the cost field.

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 states a specific verb and resource: changing an existing ticket type, with the Eventbrite resource path included. It is clearly distinguishable from create_ticket_class and update_event.

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?

It gives clear context for updating an existing ticket type and notes that only passed fields are sent, which tells the agent how to use it for partial updates. It does not explicitly name alternatives such as create_ticket_class, but the intended use is unambiguous.

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