Manage Google Calendar Events with GPT-4o Virtual Assistant (Orchestrator)

What this workflow does Front-door chat orchestrator that delegates calendar requests to a separate Sub-Agent workflow which holds Google Calendar tools (Get, Create, Delete). Keeps the agent persona and memory in the Parent for clean separation of concerns.

Pipeline: Chat Trigger → Parent Agent ("Albert") → sub_agent_cal (Execute Workflow Tool) → Child Sub-Agent → Google Calendar

Category: Productivity / Calendar / Agentic
Time to set up: ~10--15 minutes
Difficulty: Intermediate
Cost: Mostly free (n8n CE; OpenAI + Google Calendar usage as configured)

What you'll need n8n with chat trigger enabled.

OpenAI credentials.

The companion template: Agentic Google Calendar Assistant --- Sub-Agent (Calendar Tools).

After importing both, open this Parent and re-select the Sub-Agent in the toolWorkflow node.

Set up steps Import this Parent workflow.

Import the Sub-Agent workflow (Template B).

In the Parent, open sub_agent_cal (Tool → Workflow) and select the imported Sub-Agent workflow.

Ensure the input mapping passes:

chatInput → text

sessionId → sessionid

Add your OpenAI credential to the OpenAI Chat Model node.

Activate the Parent workflow.

Testing "Create a meeting tomorrow 3--4pm called 'Product Sync'" → Sub-Agent should create the event and the agent should confirm.

"What's on my calendar this week?" → Lists events.

"Delete my 'Dentist' appointment on Thursday" → Finds and deletes the event.