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create_calendar_event

Create Google Calendar events by specifying title, start and end times, with optional description, location, and attendees.

Instructions

Create a new event in Google Calendar

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
summaryYesEvent title/summary
descriptionNoEvent description (optional)
startDateTimeYesStart date and time in ISO format (e.g., 2024-12-25T10:00:00-08:00)
endDateTimeYesEnd date and time in ISO format (e.g., 2024-12-25T11:00:00-08:00)
timeZoneNoTime zone (e.g., America/Los_Angeles)UTC
attendeesNoArray of attendee email addresses (optional)
locationNoEvent location (optional)
Behavior2/5

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

With no annotations provided, the description 'Create a new event' does not disclose that this is a mutating operation requiring authentication, or any side effects or constraints beyond creation.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, clear sentence with no wasted words, but could be slightly expanded to improve completeness without losing conciseness.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no output schema and no annotations, the description does not explain return values, error handling, or prerequisites like authentication, making it incomplete for effective use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with descriptions for all 7 parameters, so baseline is 3. The description adds no additional parameter semantics beyond what the schema provides, so score remains 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states 'Create a new event in Google Calendar' with a specific verb (create) and resource (event in Google Calendar), clearly distinguishing from siblings like list, update, delete, and authentication tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is given on when to use this tool versus alternatives (e.g., update_calendar_event), prerequisites like authentication, or scenarios where creation is inappropriate.

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

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