Create Calendar Event

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

With no annotations, the description carries the full burden. It discloses the permission requirement and default calendar scope, but doesn't mention side effects such as invitation sending to attendees, online meeting creation behavior, or return value. This is a gap for a write tool with no annotation support.

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 two concise sentences, front-loading the primary action and permission requirement. The Chinese intents add multilingual value without unnecessary bulk, and every sentence earns its place.

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 has moderate complexity with nested start/end objects, optional attendees, and an online meeting flag. With no output schema or annotations, the description could disclose more about return behavior and side effects, but it's reasonably scoped for a creation tool.

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?

The input schema covers 100% of parameters with descriptions (e.g., dateTime format, timeZone default, attendee type enum), so the description adds no extra parameter semantics. Baseline 3 is appropriate since the schema does the heavy lifting.

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 uses a specific verb (create) and resource (event/meeting in the signed-in user's default calendar), clearly distinguishing it from sibling calendar tools like update, cancel, or delete. It also states the required permission, making the intent unambiguous.

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 clearly states the tool creates an event/meeting in the default calendar and requires delegated Calendars.ReadWrite, providing a clear context for invocation. It doesn't explicitly mention alternatives, but the action is self-evident compared to other calendar tools.

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