Manage Google Calendar Events with OpenAI Assistant (Get, Create, Delete)

What this workflow does Provides the tools layer for the Parent agent to manage Google Calendar: Get (list events), Create, and Delete. Accepts text + sessionid from the Parent and uses an LLM with short-term memory to choose and run the correct tool.

Pipeline: Execute Workflow Trigger → Sub-Agent → (Get / Create / Delete) → Google Calendar

Category: Productivity / Calendar / Agentic
Time to set up: ~10 minutes
Difficulty: Intermediate
Cost: Mostly free (n8n CE; OpenAI + Google Calendar usage as configured)

What you'll need OpenAI credentials.

Google Calendar OAuth2 credentials.

A calendar ID (use a placeholder like your.calendar@example.com in the node and select your actual calendar at runtime).

Set up steps Import this Sub-Agent workflow.

Open the Google Calendar tool nodes (Get, Create, Delete) and select your OAuth2 credential and calendar.

Ensure the Execute Workflow Trigger exposes two inputs: text and sessionid.

Connect the Parent's toolWorkflow node to this workflow.

Testing (direct call example) From the Parent, send: "Schedule 'Team Sync' tomorrow 10:00--11:00" → Sub-Agent should call Create.

"List events next week" → Get with timeMin/timeMax.

"Delete event 'Team Sync'" → Delete with eventId once matched.