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Track ElevenLabs voice callbacks with data tables and Telegram alerts

Created by

Created by: Tomasz Kaczyński || tomaszk
Tomasz Kaczyński

Last update

Last update 11 hours ago

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Quick overview

For small businesses that use an ElevenLabs voice agent as an AI receptionist: every call is verified, logged once in a Data Table and sent to Telegram with Called back / No answer / Spam buttons, open callbacks get timed reminders, and a daily report shows who is still waiting.

How it works

  1. Verify: ElevenLabs sends a post-call webhook. The ElevenLabs-Signature HMAC is checked against the raw body with the Crypto node; forged or old requests get 401.
  2. Log: caller, phone, reason, topic, urgency and summary are saved once per conversation in an n8n Data Table. Topics you list as spam are stored without an alert. If saving fails, you still get a Telegram alert with the caller's details.
  3. Act from Telegram: each alert has three buttons. They are signed links to a second webhook that update the call (status, attempts, time handled), edit the original message and show a short confirmation page.
  4. Remind: every 15 minutes, open callbacks that waited too long get a new alert. Urgent calls are reminded sooner, "no answer" calls are retried later, only during working hours and up to a maximum number of reminders.
  5. Report: every day at 18:00 you get the day's calls, topics, callbacks, average wait and the oldest open callers.
  6. Failed outbound calls are logged and alerted too.

Setup

  1. Execute Run once: create the callbacks table.
  2. Add Data collection items to your ElevenLabs agent: caller_name, reason, callback_number, urgency, callback_time, topic.
  3. Publish the workflow and add the production URL of Receive ElevenLabs post-call webhook as a post-call webhook in ElevenLabs.
  4. Create a Crypto credential with the webhook HMAC secret and a Telegram credential.
  5. In Settings, set your chat ID, the production URL of Receive callback action link and your timezone. About 20 minutes.

Requirements

  • An ElevenLabs Agents account with post-call webhooks
  • A Telegram bot and your chat ID
  • n8n with Data Tables, reachable over HTTPS (n8n Cloud or self-hosted with a public URL)

Customization

  • Change reminder times, working hours, maximum reminders and spam topics in Settings.
  • Replace Telegram with Slack or email, or add a Google Calendar task for urgent callbacks.
  • Use the Data Table as a simple CRM, or export it for reporting.

Additional info

Who's it for

Service businesses, clinics, workshops and agencies whose phone is answered by an ElevenLabs voice agent when nobody can pick up. The agent takes the message; this workflow makes sure somebody actually calls back.

Good to know

  • The topic and urgency come from ElevenLabs' own AI analysis (Data collection), so no extra LLM key is needed.
  • Anyone with a button link can change that one call's status; links are signed per conversation and cannot be guessed.