Dynamically Personalize Your Retell Voice Agents with n8n
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Seamlessly integrate your customer data into Retell voice agents. This n8n workflow fetches user details from your database based on the caller's phone number, enabling hyper-personalized voice interactions and dynamic prompt fulfillment.
About This Workflow
Elevate your Retell AI voice agents by leveraging external data for truly dynamic conversations. This n8n workflow acts as a bridge, receiving inbound call webhooks from Retell, looking up caller information in a Google Sheet (or any other database), and returning personalized data to your agent. By mapping caller phone numbers to details like first name, last name, and email, your agents can provide a more relevant and engaging experience. This solution is ideal for businesses looking to personalize customer interactions at scale, making every call feel unique and tailored to the individual.
Key Features
- Real-time Data Fetching: Retrieves user information dynamically based on incoming call data.
- Flexible Database Integration: Easily adapt to use your existing databases instead of Google Sheets.
- Customizable Dynamic Variables: Map any data from your source to Retell's dynamic variables for personalized prompts.
- IP Whitelisting for Security: Ensures secure communication by allowing only specific IP addresses to trigger the webhook.
How To Use
- Set up Retell Webhook: Configure your Retell agent to send inbound call webhooks to the provided n8n webhook URL. Ensure the path matches
retell-dynamic-variablesor update theWebhooknode accordingly. - Configure Google Sheets Node: In the
Get user in DB by Phone Numbernode, update thedocumentIdandsheetNameto point to your own Google Sheet. Ensure your sheet has a 'Phone Number' column formatted with a leading '+' and matches thefrom_numberfrom the Retell webhook. - Map Dynamic Variables: In the
Respond to Webhooknode, customize theresponseBodyJSON to align with the dynamic variable names expected by your Retell agent. Use the provided Jinja templating (e.g.,{{ $json['First Name'] }}) to pull data from the Google Sheet lookup. - Test and Deploy: Thoroughly test the workflow with test calls to ensure data is being retrieved and mapped correctly. Once satisfied, deploy your n8n instance and integrate the webhook URL into your Retell phone number settings.
Apps Used
Workflow JSON
{
"id": "efc05995-41c6-4cbc-86da-a5043c0b08a7",
"name": "Dynamically Personalize Your Retell Voice Agents with n8n",
"nodes": 16,
"category": "Marketing",
"status": "active",
"version": "1.0.0"
}Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.
Get This Workflow
ID: efc05995-41c6...
About the Author
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