Generate Reddit customer leads from a product URL with OpenAI and Firecrawl

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Built by Joseph Joseph
Created on June 13, 2026

Description

Reddit Lead Generator - Frontend Integrated (Productized Version)

Overview
Production-ready Reddit lead generation system with progressive data loading for optimal UX. This workflow integrates with a web frontend, sending results in real-time as they're processed instead of waiting for everything to complete.

Key Features

✅ Progressive Loading - Users see results as they come in (website analysis → keywords → conversations)
✅ 5 Response Stages - Data sent in batches for better UX
✅ Webhook Authentication - Secured with API key headers
✅ Frontend Ready - Built to work with the companion web app
✅ Real-Time Updates - No waiting for 2-minute batch processing

What This Workflow Does

Receives product URL from frontend via webhook
Immediately responds "processing started"
Analyzes website with Firecrawl → sends data to frontend
Generates 10 keywords with OpenAI → sends to frontend
Searches Reddit and filters conversations → sends in 3 batches
Frontend displays results progressively as they arrive

Response Flow

Stage 1: website_analysis - Product details, favicon, summary
Stage 2: keywords_generated - All 10 keywords
Stage 3: conversations_partial1 - First keyword results
Stage 4: conversations_partial2 - Second keyword results
Stage 5: conversations_final - Remaining keywords (3-10) in markdown

Quick Setup

Set Environment Variables in the "Set Environment Variables" node:
BACKEND_API_URL - Your frontend API endpoint
WEBHOOK_API_KEY - Your webhook security key

Configure Credentials:
Firecrawl API
Reddit OAuth2
OpenAI API

Deploy Frontend & Backend:
Clone repo: https://github.com/juppfy/leads-gen
Deploy frontend on Vercel
Deploy backend on Railway
Full instructions in the repo README

Activate Workflow and update your frontend with the webhook URL

Requirements

n8n (cloud or self-hosted)
Firecrawl API key
Reddit Developer Account
OpenAI API key
Frontend + Backend deployed (see GitHub repo)

Resources

📖 Complete Setup Guide: https://bit.ly/mediumarticleredditworkflow
🎥 Video Tutorial: https://bit.ly/youtubetutorialredditworkflow
💻 GitHub Repo: https://github.com/juppfy/leads-gen

Frontend Integration

This workflow requires the companion web app to receive and display results. The frontend handles:
User input and URL validation
Real-time result display
Conversation cards with pagination
Request tracking by searchId

Deploy instructions and complete code available in the GitHub repo above.

Difference from Batch Version

This Version (Frontend):
Progressive data loading
Real-time updates
Production-ready UX
Requires frontend deployment

Batch Version:
Single output at end
No frontend needed
Perfect for testing/scheduled runs
Simpler setup

Support

Questions? Check the Medium article or YouTube tutorial first. Both have detailed setup instructions and troubleshooting tips.

Nodes Used (6)

AI Agent
@n8n/n8n-nodes-langchain.agent
Code
n8n-nodes-base.code
HTTP Request
n8n-nodes-base.httpRequest
OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi
Reddit
n8n-nodes-base.reddit
Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured