Text back missed calls with Twilio, GPT-5.6, Google Sheets and Slack
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 AI workflow has 19 nodes and runs when an HTTP POST request hits its webhook URL. Along the way it connects Google Sheets, OpenAI Chat Model, Twilio and Slack.
How it runs
Trigger: When an HTTP POST request hits its webhook URL.
- Settings (Edit Fields (Set)): sets 7 fields: business_name, opening_hours, open_days…
- Read The Call (Code): runs custom JavaScript code
- Did Nobody Answer? (If): checks a condition and branches into true / false
- Look Them Up (Google Sheets): uses Google Sheets
- Have We Texted Recently? (Data table): get
- Decide What To Do (Code): runs custom JavaScript code
- Worth Texting? (If): checks a condition and branches into true / false
- Write The Text (Basic LLM Chain): sends a prompt to an LLM, with model: Reply Writer
- Attach The Text (Code): runs custom JavaScript code
- Text Them Back (Twilio): send (sms)
…plus 5 more steps. See the full node list below.
Services it uses
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 (12)
- Webhook
n8n-nodes-base.webhook - Edit Fields (Set)
n8n-nodes-base.set - Code
n8n-nodes-base.code - If
n8n-nodes-base.if - No Operation, do nothing
n8n-nodes-base.noOp - Google Sheets
n8n-nodes-base.googleSheets - Data table
n8n-nodes-base.dataTable - Basic LLM Chain
@n8n/n8n-nodes-langchain.chainLlm - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Twilio
n8n-nodes-base.twilio - Switch
n8n-nodes-base.switch - Slack
n8n-nodes-base.slack
From the author
Quick overview This workflow receives Twilio call status callbacks, detects missed inbound calls, looks up the caller in Google Sheets, and uses OpenAI (GPT-5.6) to draft a short SMS reply. It sends the SMS via Twilio, records the contact in an n8n Data…