Automation library · Scheduling

Automate employee leave approvals with OpenAI and Gmail

Started by someone submitting a form, and works across Gmail and Google Calendar. It hands the judgement calls to OpenAI. 13 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: OpenAI

13 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 1Model 6Logic 1Service 5

The steps in the order they run, from what starts it.

  1. 1On form submissionForm triggerStarts it
  2. 2OpenAI Chat ModelLm Chat Open AiModel
  3. 3Structured Output ParserOutput Parser StructuredModel
  4. 4Check AvailabilityGoogle Calendar ToolService
  5. 5Get EventsGoogle Calendar ToolService
  6. 6OpenAILm Chat Open AiModel
  7. 7Output ParserOutput Parser StructuredModel
  8. 8AI AgentAgentModel
  9. 9Booking AgentAgentModel
  10. 10Send message and wait for responseGmailService
  11. 11Send a message1GmailService
  12. 12IfIfLogic
  13. 13Send a messageGmailService

How it's built

Starts on
Someone submitting a form
Steps
13, with 1 branch
Size
Medium: a working afternoon
Connects to
Gmail, Google Calendar
Model
OpenAI

Questions

What does it need to run?

An n8n account, plus your own Gmail and Google Calendar accounts, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on someone submitting a form.

Does it use AI?

Yes. It calls OpenAI. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 13 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

Before you run it

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 13 steps before you point it at anything that matters.