create_event

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

Annotations already indicate this is not read-only and not destructive; the description adds useful behavioral constraints: eventData must include an id, start/end must be used instead of startTime/endTime, and reminders should default to useDefault:true. This goes beyond what annotations or the bare schema provide.

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 compact and front-loaded with the core purpose and precondition, then packs essential technical rules into a few sentences. 'Summary first' is slightly cryptic, but overall the structure is efficient.

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 14-parameter tool with no output schema, the description provides endpoint, required fields, date/time formats, and send_updates options. Ambiguity remains around how the required 'id' maps to the event_id parameter and how optional JSON parameters should be structured, but the core invocation path is well covered.

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?

With 0% schema description coverage, the description meaningfully compensates by explaining the required eventData fields, the accepted start_json/end_json shapes, and send_updates values. Some optional params like attendees_json, location, and extra_event_json are not detailed, but their names plus the required-field guidance cover most invocation cases.

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 calendar event'), immediately distinguishing it from sibling tools like get_event, update_events, delete_events, and rsvp_event. The endpoint reference adds further clarity.

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?

Explicitly tells the agent when to call it: after confirming calendar and time with the user. It does not list alternatives or exclusions, but the create operation is unambiguous among the available siblings.

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