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