Reddit post finder with Google Gemini summarization via Telegram

Who's it for

This template is perfect for content creators, researchers, marketers, and Reddit enthusiasts who want to stay updated on specific topics without manually browsing Reddit. If you need curated, AI-summarized Reddit insights delivered directly to your Telegram, this workflow automates the entire process.

What it does

This workflow transforms your Telegram into a powerful Reddit search engine with AI-powered curation. Simply send any keyword to your Telegram bot, and it will:

• Search Reddit across 4 different sorting methods (top, hot, relevance) to capture diverse perspectives
• Automatically remove duplicate posts from multiple search results
• Filter posts based on quality metrics (minimum 50 upvotes, recent content within 15 days, non-empty text)
• Extract key information: title, upvotes, subreddit, publication date, URL, and content
• Generate a clean, Telegram-formatted summary using Google Gemini AI
• Deliver structured results with direct links back to you instantly

The AI summary includes post titles, upvote counts, timestamps, brief insights, and direct Reddit links—all formatted for easy mobile reading.

How it works

Step 1: Telegram Trigger
User sends a search keyword via Telegram (e.g., "voice AI agents")

Step 2: Parallel Reddit Searches
Four simultaneous Reddit API calls search with different sorting algorithms:

• Top posts (all-time popularity)
• Hot posts (trending now)
• Relevance (best keyword matches)
• Top posts (duplicate for broader coverage)

Step 3: Merge & Deduplicate
All search results combine into one stream, then a JavaScript code node removes duplicate posts by comparing post IDs

Step 4: Field Extraction
The Edit Fields node extracts and formats:

• Post title
• Upvote count
• Subreddit name and subscriber count
• Publication date (converted from Unix timestamp)
• Reddit URL
• Post content (selftext)

Step 5: Quality Filtering
The Filter node applies three conditions:

• Minimum 50 upvotes (ensures quality)
• Non-empty content (excludes link-only posts)
• Posted within last 15 days (ensures freshness)

Step 6: Data Aggregation
All filtered posts aggregate into a single dataset for AI processing

Step 7: AI Summarization
Google Gemini AI analyzes the aggregated posts and generates a concise, Telegram-formatted summary with:

• Emoji indicators for better readability
• Point-wise breakdown of top 5-7 posts
• Upvote counts and relative timestamps
• Brief 1-2 sentence summaries
• Direct Reddit links

Step 8: Delivery
The formatted summary sends back to the user's Telegram chat

Requirements

Credentials needed:

• Reddit OAuth2 API - For searching Reddit posts (Get Reddit API credentials)
• Google Gemini API - For AI-powered summarization (Get Gemini API key)
• Telegram Bot Token - For receiving queries and sending results (Create Telegram Bot)

n8n Version: Self-hosted or Cloud (latest version recommended)

Setup Instructions

1. Create Telegram Bot

• Message @BotFather on Telegram
• Send /newbot and follow prompts
• Copy the bot token for n8n credentials
• Start a chat with your new bot

2. Configure Reddit API

• Go to https://www.reddit.com/prefs/apps
• Click "Create App" → Select "script"
• Note your Client ID and Secret
• Add credentials to n8n's Reddit OAuth2

3. Get Gemini API Key

• Visit https://ai.google.dev/
• Create a new API key
• Add to n8n's Google Gemini credentials

4. Import & Configure Workflow

• Import this template into n8n
• Add your three credentials to respective nodes
• Remove pinData from "Telegram Trigger" node (test data)
• Activate the workflow

5. Test It

• Send any keyword to your Telegram bot (e.g., "machine learning")
• Wait 10-20 seconds for results
• Receive AI-summarized Reddit insights

How to customize

Adjust Quality Filters:
Edit the Filter node conditions:

• Change minimum upvotes (currently 50)
• Modify time range (currently 15 days)
• Add subreddit subscriber minimum

Limit Results:
Add a Limit node after Filter to cap results at 10-15 posts for faster processing

Change Search Strategies:
Modify the Reddit nodes' "sort" parameter:

• new - Latest posts first
• comments - Most commented
• controversial - Controversial content

Customize AI Output:
Edit the AI Agent's system message to:

• Change summary style (more/less detail)
• Adjust formatting (bullets, numbered lists)
• Modify language/tone
• Add emoji preferences

Add User Feedback:
Insert a Telegram Send Message node after the trigger:

"🔍 Searching Reddit for '{{ $json.message.text }}'... Please wait."

Enable Error Handling:
Create an Error Workflow:

• Add Error Trigger node
• Send fallback message: "❌ Search failed. Please try again."

Sort by Popularity:
Add a Sort node after Filter:

• Field: upvotes
• Order: Descending