Voice-based appointment booking system with ElevenLabs AI and Cal.com
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This workflow has 5 nodes and runs when an HTTP POST request hits its webhook URL. It uses only n8n's built-in nodes. It also calls api.cal.com over HTTP.
How it runs
Trigger: When an HTTP POST request hits its webhook URL.
- Check Is Request For Available Slot (If): checks a condition and branches into true / false
- Check available slot in Cal.com (HTTP Request): calls api.cal.com
- Book an Appointment (HTTP Request): calls api.cal.com (POST)
- Respond to Webhook: sends the response back to the webhook caller
HTTP calls to: api.cal.com
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (4)
- Webhook
n8n-nodes-base.webhook - Respond to Webhook
n8n-nodes-base.respondToWebhook - HTTP Request
n8n-nodes-base.httpRequest - If
n8n-nodes-base.if
From the author
✅ What problem does this workflow solve? Tired of the back-and-forth involved in scheduling meetings? This workflow lets you offer a seamless, voice-based appointment booking experience. It automatically checks your Cal.com availability and either books a…