# Build your own Google Drive MCP server with OpenAI: n8n workflow

> Started by an event in a connected app, and works across Google Drive. It hands the judgement calls to OpenAI.

Source: https://millionrounds.com/workflow/build-your-own-google-drive-mcp-server-with-openai (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Setup and learning](https://millionrounds.com/workflows?category=Setup+and+learning#library)

# Build your own Google Drive MCP server with OpenAI

Started by an event in a connected app, and works across Google Drive. It hands the judgement calls to OpenAI. 13 steps, 2 branches: a working afternoon to understand properly.

Medium Calls a model: OpenAI

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fbuild-your-own-google-drive-mcp-server-with-openai)

**13 steps** Medium: a working afternoon

**2** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 2 Model 3 Logic 4 Service 4

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

- 1 **When Executed by Another Workflow** Execute Workflow trigger *Starts it*
- 2 **Read File From GDrive** Tool Workflow *Model*
- 3 **Search Files from Gdrive** Google Drive Tool *Service*
- 4 **Operation** Switch *Logic*
- 5 **Google Drive MCP Server** Mcp trigger *Starts it*
- 6 **Download File1** Google Drive *Service*
- 7 **FileType** Switch *Logic*
- 8 **Extract from PDF** Extract From File *Service*
- 9 **Extract from CSV** Extract From File *Service*
- 10 **Analyse Image** Open Ai *Model*
- 11 **Transcribe Audio** Open Ai *Model*
- 12 **Get PDF Response** Set *Logic*
- 13 **Get CSV Response** Set *Logic*

## How it's built

- **Starts on:** An event in a connected app
- **Steps:** 13, with 2 branches
- **Size:** Medium: a working afternoon
- **Connects to:** Google Drive
- **Model:** OpenAI

## Questions

What does it need to run?

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

What starts it?

It starts on an event in a connected app.

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.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fbuild-your-own-google-drive-mcp-server-with-openai)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Google Drive](https://millionrounds.com/workflows?service=Google+Drive#library)

## Workflows like it

Also setup and learning, with the same services where possible, closest in size first.

- [**Investigate phishing emails from Google Sheets with MCP** 13 steps · Google Drive, Google Sheets](https://millionrounds.com/workflow/investigate-phishing-emails-from-google-sheets-with-mcp)
- [**Restore and recover n8n credentials from Google Drive backups** 13 steps · Google Drive](https://millionrounds.com/workflow/restore-and-recover-n8n-credentials-from-google-drive-backup)
- [**Create tutorial videos from documentation URLs with Claude** 16 steps · calls a model · Google Drive, YouTube](https://millionrounds.com/workflow/create-tutorial-videos-from-documentation-urls-with-claude)
- [**Automated n8n credential backups to Google Drive** 7 steps · Google Drive](https://millionrounds.com/workflow/automated-n8n-credential-backups-to-google-drive)
- [**Generate and retrieve Napkin.AI visuals with MCP** 7 steps · Google Drive](https://millionrounds.com/workflow/generate-and-retrieve-napkin-ai-visuals-with-mcp)