Automation library · Lead generation

Cold call agent with Telegram and Retell AI

Started by an incoming Telegram message, and works across Google Sheets and Telegram. It hands the judgement calls to OpenAI. 17 steps, 2 branches, 2 loops or waits: a working afternoon to understand properly.

MediumCalls a model: OpenAI

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

The flow

Starts it 3Model 2Logic 6Service 6

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

  1. 1OpenAI Chat ModelLm Chat Open AiModel
  2. 2WebhookWebhookStarts it
  3. 3Telegram TriggerTelegram triggerStarts it
  4. 4Google Sheets TriggerGoogle Sheets triggerStarts it
  5. 5Summarization ChainChain SummarizationModel
  6. 6If Call Now is usedIfLogic
  7. 7AggregateAggregateLogic
  8. 8Append or update row in sheetGoogle SheetsService
  9. 9Cold LeadsGoogle SheetsService
  10. 10Invalid EntryTelegramService
  11. 11Code in JavaScriptCodeLogic
  12. 12If all leads have been calledIfLogic
  13. 13Send a text message1TelegramService
  14. 14Retell AIHttp RequestService
  15. 15Loop Over ItemsSplit In BatchesLogic
  16. 16WaitWaitLogic
  17. 17All Leads CalledTelegramService

How it's built

Starts on
An incoming Telegram message
Steps
17, with 2 branches, 2 loops or waits
Size
Medium: a working afternoon
Connects to
Google Sheets, Telegram
Model
OpenAI

Questions

What does it need to run?

An n8n account, plus your own Google Sheets 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. 17 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 17 steps before you point it at anything that matters.