Multiple Webhooks response for the same Webhook Triger

Questions
1

Hello everyone,

I’m facing a challenge with my workflow implementation and need your guidance. Let me break down my current setup and requirements:

Current Setup:

  • I have a workflow initiated by a webhook trigger that POSTs to another server hosting my chatbot UI
  • The workflow processes data through a bot and returns a response to the user
  • This response successfully appears in the UI’s dialog box

Challenge:

I want to implement a parallel branch in my workflow that:

  • Defines a stage name and title
  • Sends this information back to the UI server via webhook response
  • Should run parallel to the main dialog response
  • The UI should handle these two responses separately (dialog content and header information)

Specific Questions:

  1. Is it technically possible to send multiple webhook responses from a single trigger?
  2. What would be the recommended approach for configuring this in n8n’s webhook settings?
  3. How should I structure the UI server side to handle these separate responses?

Technical Requirements:

  • Main response: Display in dialog box
  • Secondary response: Display in top banner
  • Both responses should originate from the same initial webhook trigger
  • UI server needs to distinguish between these responses

Any help or guidance would be greatly appreciated. If you’ve implemented something similar, I’d love to hear about your approach.

Thank you in advance!

2

It looks like your topic is missing some important information. Could you provide the following if applicable.

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:
3

n8n version: 1.80.3
no database
running trough n8n cloud
operating system: Windows 11

4

Hello! Your friendly n8n support specialist here, ready to help you implement parallel webhook responses for your chatbot UI. I’m passionate about solving workflow challenges, so let’s break this down step by step!

:one: Layman’s Terms (Simple & Friendly)

Problem: You want to send two pieces of information (dialog content and header info) back to your chatbot UI at the same time.

Why It’s Tricky:

  • A single webhook trigger usually sends one response.
  • You need to split the response into two parts and send them separately.

Simple Fix:

  1. Split the Workflow: Create two branches after the webhook trigger.
  2. Send Two Responses: Use two separate webhook nodes to send the dialog content and header info.
  3. Update Your UI: Teach your UI to handle both responses and display them in the right places.

:two: Experienced User Guide (Step-by-Step Fix)

Root Cause: A single webhook trigger can’t natively send multiple responses, but you can simulate this with parallel branches.

Steps to Fix:

Step 1: Split the Workflow

  1. After the webhook trigger, add a Split In Batches Node.
  2. Set it to split into two branches (one for dialog content, one for header info).

Step 2: Prepare Responses

  1. Branch 1 (Dialog Content):
  • Add a Function Node to format the dialog response.
  • Use a Webhook Node to send it back to the UI.
  1. Branch 2 (Header Info):
  • Add a Function Node to format the header response.
  • Use another Webhook Node to send it back to the UI.

Step 3: Update Your UI

  1. Modify your UI server to listen for two separate webhook responses.
  2. Display the dialog content in the dialog box and the header info in the top banner.

:three: Professional Deep Dive (Technical Fix)

Technical Analysis:

  • Webhook Limitations: A single webhook trigger can only send one response, but you can simulate multiple responses using parallel branches.
  • UI Handling: Your UI server needs to distinguish between the two responses and display them in the correct components.

Advanced Solution:

Step 1: Workflow Design

  1. Webhook Trigger: Start with your existing webhook trigger.
  2. Split In Batches Node: Split the workflow into two parallel branches.
  3. Branch 1 (Dialog Content):
  • Use a Function Node to format the dialog response:

javascript

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return { type: “dialog”, content: $input.all()[0].json.dialogContent };

  • Send it via a Webhook Node to your UI server.
  1. Branch 2 (Header Info):
  • Use a Function Node to format the header response:

javascript

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return { type: “header”, title: $input.all()[0].json.headerTitle };

  • Send it via another Webhook Node to your UI server.

Step 2: UI Server Updates

  1. Endpoint Handling: Create two endpoints (or one endpoint with logic to distinguish responses):
  • /webhook/dialog for dialog content.
  • /webhook/header for header info.
  1. Response Parsing: Use the type field to route responses to the correct UI component.

Step 3: Testing

  1. Test the workflow with mock data to ensure both responses are sent correctly.
  2. Verify that the UI displays the dialog content and header info in the right places.

:rotating_light: Critical Checks

  1. Webhook URLs: Ensure both webhook nodes point to the correct UI endpoints.
  2. Response Formatting: Use consistent JSON structures for both responses.
  3. UI Logic: Ensure your UI can handle and display both responses simultaneously.

Please mark this as solution if this worked for you, be blessed!