Create Dynamic Workflows Programmatically via Webhooks & n8n API

Overview

This workflow exposes an HTTP endpoint (webhook) that accepts a JSON definition of an n8n workflow, validates it, and—if everything is correct—dynamically creates that workflow in the n8n instance via its internal API. If any validation fails or the API call encounters an error, an explanatory message with details is returned.

Workflow Diagram

text Webhook │ ▼ Validate JSON ── fails validation ──► Validation Error │ └─ passes ─► Validation Successful? │ ├─ true ─► Create Workflow ──► API Successful? ──► Success Response │ │ │ └─ false ─► API Error └─ false ─► Validation Error

Step-by-Step Details

1. Webhook

Type: Webhook (POST) Path: /webhook/create-workflow Purpose: Expose a URL to receive a JSON definition of a workflow. Expected Input: JSON containing the main workflow fields (name, nodes, connections, settings).

2. Validate JSON