Create calendar event

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

With no annotations, the description carries the full disclosure burden but only mentions the all-day date format (already present in the schema). It fails to disclose that this is a mutating operation, whether it creates in the primary calendar by default, or any permission requirements.

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 consists of two short sentences with zero unnecessary words. It front-loads the core purpose and adds a single key operational detail, making it extremely concise and easy to scan.

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 8 parameters, no annotations, and no output schema, the description is too sparse. It does not mention default calendar behavior, how account selection works, optional fields, or any side effects. It leaves the agent with significant gaps for correct invocation.

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 high (75%), so baseline is 3. The description adds minimal value beyond schema, restating the all-day date format that already exists in start/end descriptions. It does not help with undocumented parameters like location or description, but the schema still reveals their names.

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 the tool creates a calendar event, specifying it can be timed or all-day. This distinguishes it from sibling tools like google_calendar_create_meet (which creates Meet events) and other calendar event operations (list, get, update, delete).

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?

No explicit guidance is given on when to use this tool versus alternatives like google_calendar_create_meet or when to use date-only vs datetime formats. The only hint is the all-day date format note, which is more about parameter usage than selection criteria.

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