create_calendar_event

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

No annotations are provided, so the description carries the full burden. It mentions optional invite sending when attendees are given, but does not disclose permissions, side effects, or what happens upon success. While adequate, it lacks deeper behavioral context.

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 docstring format is concise and well-structured, with a clear overview and numbered parameter descriptions. Every sentence is necessary and adds value, with no redundancy.

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?

Given the presence of an output schema (which handles return values), the description is complete for a create operation. It covers all parameters and core behavior. Minor gap: no mention of prerequisites or confirmation of event creation, but overall sufficient.

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 0%, but the description fully explains each parameter: subject (title), start (format), duration_minutes (length), location/body (optional), attendees (semicolon-separated triggers invite). It adds format and behavioral details beyond the schema titles.

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 clearly states 'Create a calendar event' with a specific verb and resource. It distinguishes from siblings like list_calendar_events (read-only) and send_email (different action).

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 explains when to use the attendees parameter (to send invites), providing clear usage context. However, it does not explicitly mention when not to use this tool or provide alternatives, leaving a minor gap.

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