Automation library · Lead generation

Scan business cards from LINE with Gemini and Slack

Started by another system calling it, and works across Gmail, Google Sheets and Slack. It hands the judgement calls to Gemini. 14 steps, 2 branches: a working afternoon to understand properly.

MediumCalls a model: Gemini

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14 stepsMedium: a working afternoon
2Branches: places the flow splits
0Loops or waits
3Services it connects to

The flow

Starts it 2Model 2Logic 4Service 6

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

  1. 1LINE WebhookWebhookStarts it
  2. 2Google Gemini Chat ModelLm Chat Google GeminiModel
  3. 3Respond to LINE immediatelyRespond To WebhookStarts it
  4. 4Set config valuesSetLogic
  5. 5Extract business card data with GeminiChain LlmModel
  6. 6Is image message?IfLogic
  7. 7Parse Gemini JSON responseCodeLogic
  8. 8Download image from LINEHttp RequestService
  9. 9Reply no-image message on LINEHttp RequestService
  10. 10Save contact to Google SheetsGoogle SheetsService
  11. 11Notify team on SlackSlackService
  12. 12Has email address?IfLogic
  13. 13Send thank-you email via GmailGmailService
  14. 14Reply success message on LINEHttp RequestService

How it's built

Starts on
Another system calling it
Steps
14, with 2 branches
Size
Medium: a working afternoon
Connects to
Gmail, Google Sheets, Slack
Model
Gemini

Questions

What does it need to run?

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

What starts it?

It starts on another system calling it.

Does it use AI?

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

How long does it take to set up?

Plan an afternoon. 14 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 14 steps before you point it at anything that matters.