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

Annotations carry only destructiveHint=true, so the description carries most of the load and does so well: it discloses the 403 permission prerequisite and that ticket types are set up elsewhere, and cites the underlying endpoint. It stops short of describing idempotency or what the created event identifier looks like, which for a mutation tool would be valuable.

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?

Three tightly packed sentences: the creation scope first, then the permission caveat and workflow note, then the endpoint reference. Nothing is padding and the key constraint (403 without permission) is not buried.

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 an 8-parameter tool with nested location/classification objects and no output schema, the description covers scope, the permission blocker, and the multi-step workflow. It leaves the return shape and the event ID implied, but the schema and the 'base event' framing give the agent enough to invoke correctly.

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 every one of the 8 parameters is already documented in the schema with formats and enums. The description only restates the field list at a high level, adding no format, default, or constraint details beyond the schema. Baseline 3 is appropriate.

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?

States a specific verb and resource ('Create a base event') and enumerates the fields the base event carries, plus clarifies what is NOT created (ticket types, handled in the console). This differentiates it well from the ticket/order siblings. It does not explicitly name update_event or get_event as the alternatives, so it stops short of a 5.

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 gives one concrete usage condition – a special Humanitix permission must be enabled or the call returns 403 – which is genuinely actionable. However, there is no guidance on when to create vs. update an existing event, no ordering advice relative to the ticket-type workflow, and no exclusions.

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