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)

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What you'll need

• OpenAI credentials.

• Google Calendar OAuth2 credentials.

• A calendar ID (use a placeholder like [[email protected]](/cdn-cgi/l/email-protection) in the node and select your actual calendar at runtime).

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Set up steps

1. Import this Sub-Agent workflow.

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

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

4. Connect the Parent's toolWorkflow node to this workflow.

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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.