Generate weekly Reddit startup opportunity reports with Groq AI

This n8n template automatically scans 10 subreddits every Monday, filters ~1000 posts for genuine frustration signals, and delivers a structured startup opportunity report to your inbox — powered by Groq AI.

Perfect for indie hackers, product builders, and founders who want to stay on top of what people are actually begging someone to build — without spending hours manually browsing Reddit.

Good to know

• Uses Reddit's public JSON API — no Reddit account or API key required
• Groq's free tier is generous enough to run this weekly at zero cost
• Each run analyzes up to 1000 posts and completes in under 60 seconds

How it works

• A Schedule Trigger fires every Monday at 8AM to kick off the workflow
• A Code node defines 10 target subreddits (entrepreneur, SaaS, freelance, startups, and more)
• An HTTP Request node fetches the 100 newest posts from each subreddit using Reddit's public JSON endpoint
• A Code node filters all posts against 27 frustration-signal keywords like "why doesn't X exist", "sick of manually", "wish there was a tool for this"
• An Aggregate node merges all matched posts from all 10 subreddits into a single dataset
• A Code node builds a structured AI prompt embedding all posts with specific instructions for analysis
• An HTTP Request node sends the dataset to Groq's API (llama-3.3-70b-versatile) for deep analysis
• A Code node wraps the AI output in a clean HTML email template
• A Gmail node delivers the weekly report directly to your inbox

How to use

• Import the workflow and connect your Groq API key as an HTTP Header Auth credential
• Connect your Gmail account via OAuth2
• Change the recipient email in the Gmail node to your own address
• Run manually first to verify the full flow end to end, then activate the schedule

Requirements

• Groq account for AI analysis (free at console.groq.com)
• Gmail account for delivery via OAuth2

Customising this workflow

• Edit the subreddit list in the Define Subreddits node to focus on your specific niche or industry
• Add or remove keywords in the Filter Posts node to tune how sensitive the pain detection is
• Swap the Gmail node for Slack, Telegram, or Outlook if you prefer a different delivery channel
• Change the schedule from weekly to daily for higher-frequency monitoring
• Replace Groq with OpenAI GPT-4o by swapping the HTTP Request URL and auth header — the prompt format is identical