Generate and score MVP ideas from Reddit with OpenRouter LLMs

by Jesse Lane ✓ · 17 views · created 2026-06-07 · Market Research, AI Summarization

What this workflow does

This AI workflow has 16 nodes and runs when an HTTP GET request hits its webhook URL. Along the way it connects Reddit and OpenRouter Chat Model.

How it runs

Trigger: When an HTTP GET request hits its webhook URL.

1. Normalize Input Data (Code): runs custom JavaScript code
2. Fetch Reddit Posts (Reddit): uses Reddit
3. Prepare Reddit Post Items (Code): runs custom JavaScript code
4. Loop Over Reddit Posts (Loop Over Items (Split in Batches)): loops over the items in batches
5. Generate MVP Ideas (Basic LLM Chain): sends a prompt to an LLM, with model: Execute Idea Generator Model; output parser: Parse Structured Output
6. Merge: merges the data from its input branches
7. Fetch Top Comments from Reddit (Reddit): uses Reddit
8. Combine Posts and Comments (Merge): merges the data from its input branches
9. Normalize and Evaluate Ideas (Code): runs custom JavaScript code
10. Prepare AI Input Data (Code): runs custom JavaScript code

…plus 2 more steps. See the full node list below.

Services it uses

RedditOpenRouter Chat Model

Before you upgrade to n8n 3.0

Nodes used (9)

• Webhookn8n-nodes-base.webhook
• Coden8n-nodes-base.code
• Redditn8n-nodes-base.reddit
• Loop Over Items (Split in Batches)n8n-nodes-base.splitInBatches
• Mergen8n-nodes-base.merge
• Basic LLM Chain@n8n/n8n-nodes-langchain.chainLlm
• OpenRouter Chat Model@n8n/n8n-nodes-langchain.lmChatOpenRouter
• Structured Output Parser@n8n/n8n-nodes-langchain.outputParserStructured
• Respond to Webhookn8n-nodes-base.respondToWebhook

From the author

Quick Overview This workflow exposes a webhook that fetches Reddit posts and top comments, uses OpenRouter LLM models to generate structured MVP business ideas, scores and filters them, and returns the ranked results as a JSON response. How it works 1.…

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