Connect Retell Voice Agents to Custom Functions — n8n Workflow

Low complexity🔗 Webhook3 nodes💎 Other👁 1,189 viewsby Agent Studio

Overview

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.

Pre

Nodes used

WebhookRespond to Webhook[Replace me!] Set responseSticky Note1

Workflow Preview

🧠 Place your logic here!
Your Agent logic goes here.
You can, for example, use an AI Agent to provide inform
Retell Custom Function Webhook
POST Webhook received from Retell's Custom Function eac
Retell Custom Function Response
Response to the webhook that will be provided back to R
Modify the response accordingly if you want anything el
Connect Retell Voice Agents to Custom Functio
Overview
- This workflow allows you to trigger custom logic in n
⚡
W
Webhook
⚡
R
Respond to Webhook
[
[Replace me!] Set response
3 nodes2 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a webhook trigger.

  2. 2

    Process

    Data flows through 3 nodes, connecting respondtowebhook, set, webhook.

  3. 3

    Output

    The workflow completes its automation and delivers the result to the configured destination.

Node Details (3)

WE

Webhook

webhook

#1
RE

Respond to Webhook

respondToWebhook

#2
[R

[Replace me!] Set response

set

#3
ST

Sticky Note1

stickyNote

#4

How to Import This Workflow

  1. 1Click Download JSON button on the right to save the workflow file.
  2. 2Open your n8n instance. Go to Workflows → New → Import from file.
  3. 3Select the downloaded connect-retell-voice-agents-to-custom-functions file and click Import.
  4. 4Set up credentials for each service node (API keys, OAuth, etc.).
  5. 5Click Test Workflow to verify everything works, then activate it.

Or paste directly in n8n → Import from JSON:

{ "name": "Connect Retell Voice Agents to Custom Functions", "nodes": [...], ...}

Integrations

respondtowebhooksetwebhook

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes3
Complexitylow
Triggerwebhook
Views1,189
CategoryOther

Created by

Agent Studio

Agent Studio

@agentstudio

Tags

respondtowebhooksetwebhook
⚡

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