Connect Retell Voice Agents to Custom Functions

Overview This workflow allows you to trigger custom logic in n8n directly from Retell's Voice Agent using Custom Functions. It captures a POST webhook from Retell every time a Voice Agent reaches a Custom Function node. You can plug in any logic—call an external API, book a meeting, update a CRM, or even return a dynamic response back to the agent. Who is it for For builders using Retell who want to extend Voice Agent functionality with real-time custom workflows or AI-generated responses. Prerequisites Have a Retell AI Account A Retell agent with a Custom Function node in its conversation flow (see template below) Set your n8n webhook URL in the Custom Function configuration (see "How to us

Help me set up the n8n workflow "Connect Retell Voice Agents to Custom Functions" (https://n8n.io/workflows/3805). It uses: . Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.