Tutorial: Deploy a RAG System to the Cloud Using Render and Supabase for Free

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A developer tutorial on DEV Community walks through migrating a locally hosted RAG (Retrieval-Augmented Generation) system to the cloud using Render and Supabase. The guide replaces a local Docker-based pgvector setup with Supabase's managed PostgreSQL service, while hosting the MCP HTTP server on Render's free tier. Both platforms offer free starting tiers with no credit card required, making the setup accessible for developers. The tutorial covers provisioning a Supabase project, configuring pgvector, migrating existing documents via a Python script, and adapting the server code to read environment variables set by Render. A key technical note highlights that Render requires IPv4, so Supabase's connection pooler on port 6543 must be used instead of the default port 5432.

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