Automate outbound sales calls to qualified leads with VAPI.ai and Google Sheets

This workflow automates outbound calls to qualified leads using VAPI.ai and Google Sheets. Here's how it works and how to set it up. How It Works Read Leads: The workflow starts by reading leads from a Google Sheet where the "AI call status" is marked as "NO" Batch Processing: Leads are processed one at a time (batch size = 1) to ensure proper sequencing Variable Setup: Extracts the phone number and row number from each lead record Trigger VAPI Call: Makes an API call to VAPI.ai to initiate an AI-powered outbound call Update Status: Marks the lead as "YES" in the Google Sheet after the call is triggered to prevent duplicate calls Detailed Setup Guide Prerequisites n8n instance (self-hosted or cloud) Google Sheets account with OAuth2 credentials VAPI.ai account with API access Step 1: Google Sheets Setup Create a Google Sheet with your leads data Ensure you have these columns (adjust if needed): Phone number (column E in the current setup) AI call status (column F in the current setup) Mark all leads you want to call with "NO" in the status column Step 2: Google Sheets Credentials In n8n, go to Credentials > Add New Select "Google Sheets OAuth2 API" Follow the prompts to authenticate with your Google account Name it (e.g., "Google Sheets account 3" as in the example) Step 3: VAPI.ai Setup Get your VAPI.ai API credentials In n8n, go to Credentials > Add New Select "HTTP Header Auth" Add your VAPI authorization header (typically "Bearer YOURAPIKEY") Name it (e.g., "Header Auth account 4" as in the example)