Supabase Mcp vs Postgres Mcp

The Supabase MCP server and the PostgreSQL MCP server both let AI assistants interact with databases, but they target different use cases. The Supabase MCP provides access to Supabase's full platform, while the PostgreSQL MCP works with any Postgres database directly.

Overview

Supabase MCP Server connects AI assistants to a Supabase project, exposing database queries, table management, authentication user management, storage bucket operations, and edge function deployment through the MCP protocol. PostgreSQL MCP Server provides direct SQL access to any PostgreSQL database via connection string. It focuses purely on database operations — running queries, listing tables, describing schemas, and executing migrations.

Key Differences

Scope: The Supabase MCP covers the entire Supabase platform — database, auth, storage, realtime, and edge functions. The PostgreSQL MCP is database-only, handling SQL queries and schema operations. Compatibility: The PostgreSQL MCP works with any PostgreSQL database — Amazon RDS, Google Cloud SQL, self-hosted, Neon, or Supabase. The Supabase MCP requires a Supabase project and uses Supabase-specific APIs. Authentication: The Supabase MCP can manage auth users, create invite links, and modify user metadata. The PostgreSQL MCP has no authentication management capabilities. Safety features: Both implement read-only modes and query validation. The Supabase MCP adds Row Level Security awareness and respects Supabase's permission model. The PostgreSQL MCP relies on database role permissions.

Pricing

Both MCP servers are free and open-source. Costs depend on your underlying database hosting — Supabase free tier or paid plans versus your PostgreSQL hosting provider.

Verdict

Choose the Supabase MCP if you are building on Supabase and want AI access to the full platform including auth, storage, and functions. Choose the PostgreSQL MCP if you need a lightweight, universal connector to any PostgreSQL database regardless of hosting provider.