PostgreSQL MCP Server

What is the PostgreSQL MCP Server?

The PostgreSQL MCP Server enables language models to securely interact with PostgreSQL databases. By exposing tools for schema introspection and SQL query execution, AI assistants can analyze relational database structures, write optimized SQL queries, and diagnose data anomalies safely.

Core Tools & Capabilities

• query: Execute SQL statements against connected databases with tabular record returns.
• Schema Introspection: Inspect table columns, primary/foreign key relationships, and indexes.
• Read-Only Guardrails: Configurable to restrict agents to SELECT queries, preventing accidental data modification.
• Multi-Cloud Compatibility: Connects seamlessly to local PostgreSQL, Supabase, Neon, AWS RDS, and Railway.

Configuration Example

{
  "mcpServers": {
    "postgres": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-postgres", "postgresql://user:password@localhost:5432/dbname"]
    }
  }
}

Frequently Asked Questions (FAQ)

Is it safe to connect production databases?

We strongly recommend configuring a dedicated read-only database user role with restricted permissions to prevent unauthorized updates or deletions.

Does the server support database migrations?

If granted appropriate write permissions, the agent can draft and apply DDL migration scripts, though human review is advised.

Can it connect to cloud databases like Neon or Supabase?

Yes, any standard PostgreSQL connection URI with SSL support is fully compatible.