Supabase

About this connector

Supabase is an open source Firebase alternative built on PostgreSQL that provides authentication, storage, real-time subscriptions, and serverless functions with the predictability of SQL and the freedom to self-host. Each Supabase project includes a dedicated Postgres database, auto-generated REST and GraphQL APIs, real-time data synchronization, and file storage, all secured with Row-Level Security (RLS). Unlike Firebase's proprietary approach, Supabase leverages open source components including PostgreSQL, giving developers full SQL capabilities, ACID transactions, and the option to self-host or develop locally. The platform offers predictable pricing that doesn't bill per request, simplifying budget planning compared to usage-based alternatives. Supabase is widely regarded as the best open source Firebase alternative in 2026, competing alongside other notable options like Appwrite and PocketBase. For AI application development, Supabase provides a complete backend infrastructure for storing user data and conversation history, managing authentication and permissions for AI agents, and leveraging PostgreSQL extensions like pgvector for building vector search and RAG capabilities.