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Screen rental applicants with Telegram and OpenAI

Started by an incoming Telegram message, and works across Gmail, Google Sheets, Slack and Telegram. It hands the judgement calls to OpenAI. 18 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: OpenAI

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18 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
4Services it connects to

The flow

Starts it 2Model 3Logic 5Service 8

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

  1. 1On Workflow ErrorError triggerStarts it
  2. 2New Applicant Message (Active)Telegram triggerStarts it
  3. 3Slack – Post Workflow Error AlertSlackService
  4. 4Extract Message Data (Active)SetLogic
  5. 5Parse Application Data (Active AI)Open AiModel
  6. 6Parse AI Output (Active)CodeLogic
  7. 7Save Application to Sheet (Active)Google SheetsService
  8. 8Credit & Background Check (Active)Http RequestService
  9. 9Score & Flag Red Flags (Active AI)Open AiModel
  10. 10Parse Scoring Output (Active)CodeLogic
  11. 11Update Application Score (Active)Google SheetsService
  12. 12Confirm Receipt to Applicant (Active)TelegramService
  13. 13Notify Landlord - New Ranked Applicant (Active)TelegramService
  14. 14Has Previous Landlord Email? (Active)IfLogic
  15. 15Send Reference Check Email (Active)GmailService
  16. 16Extract Reference Answers (Active AI)Open AiModel
  17. 17Parse Reference Output (Active)CodeLogic
  18. 18Update Reference Response in Sheet (Active)Google SheetsService

How it's built

Starts on
An incoming Telegram message
Steps
18, with 1 branch
Size
Medium: a working afternoon
Connects to
Gmail, Google Sheets, Slack, Telegram
Model
OpenAI

Questions

What does it need to run?

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

What starts it?

It starts on an incoming Telegram message.

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. 18 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 18 steps before you point it at anything that matters.