Enhance Your Retell Voice Agents with Dynamic Customer Data
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Seamlessly integrate your customer data into Retell Voice Agents. This n8n workflow automatically fetches user details from your Google Sheet based on the caller's phone number, enriching your AI conversations with personalized information.
About This Workflow
This n8n workflow empowers Retell agent builders to dynamically personalize voice interactions. By connecting to your existing customer database (currently demonstrated with Google Sheets), it retrieves key information like first name, last name, and email, directly correlating it with the incoming caller's phone number. This allows your Retell agent to greet callers by name, access their history, and provide a truly tailored experience. The workflow is designed to be easily adaptable, supporting various data sources beyond Google Sheets, ensuring a scalable solution for enriching your AI-powered voice communications.
Key Features
- Real-time Data Lookup: Fetches customer data from your database based on the inbound caller's phone number.
- Dynamic Variable Population: Automatically maps retrieved data to your Retell agent's dynamic variables.
- Customizable Data Sources: Easily switch from Google Sheets to any other database or API.
- IP Whitelisting: Securely handles incoming webhooks from Retell with IP verification.
- Flexible Response Formatting: Adapts the data structure to meet Retell's expected JSON format.
How To Use
- Set up Retell Webhook: Copy the generated n8n webhook URL (e.g.,
https://your-instance.app.n8n.cloud/webhook/retell-dynamic-variables) and paste it into your Retell agent's "Add an inbound webhook" configuration for your purchased phone number. - Configure Google Sheets Node: Update the
documentIdandsheetNamein the "Get user in DB by Phone Number" node to point to your own Google Sheet. Ensure thelookupColumnis set to your phone number field. - Adjust Phone Number Format: In your Google Sheet, ensure phone numbers start with
'+'and are formatted consistently (e.g.,'+15551234567'). - Map Dynamic Variables: In the "Respond to Webhook" node, adjust the
responseBodyto match the dynamic variable names defined in your Retell agent's prompts. Use the{{ $json['Your Column Name'] }}syntax to reference data from your Google Sheet. - Define Retell Prompts: In your Retell agent's prompt configuration, use the syntax
{{variable_name}}(e.g.,{{first_name}}) to reference the dynamic variables you've set up.
Apps Used
Workflow JSON
{
"id": "6970fe8b-d41b-4df2-b995-6ee0b7c49d2c",
"name": "Enhance Your Retell Voice Agents with Dynamic Customer Data",
"nodes": 13,
"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: 6970fe8b-d41b...
About the Author
DevOps_Master_X
Infrastructure Expert
Specializing in CI/CD pipelines, Docker, and Kubernetes automations.
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