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PostgreSQL Explorer

gldc/mcp-postgres

A PostgreSQL MCP server implementation with OAuth authentication support using the Model Context Protocol (MCP) Python SDK. This server enables AI agents to interact with PostgreSQL databases through a standardized interface, with secure multi-user authentication and cloud deployment capabilities.

Install

docker run \

Client configuration

{
  "mcpServers": {
    "postgres": {
      "command": "/path/to/.venv/bin/python",
      "args": [
        "/path/to/postgres_server.py"
      ],
      "env": {
        "POSTGRES_CONNECTION_STRING": "<POSTGRES_CONNECTION_STRING>"
      }
    }
  }
}

Environment variables

POSTGRES_CONNECTION_STRINGGOOGLE_CLIENT_IDGOOGLE_CLIENT_SECRETSECRET_KEY
GitHub stars
5
Author
@gldc
Category
Database, Developer Tools
License
MIT
Updated
Oct 6, 2026

Features

  • OAuth Authentication: Secure Google OAuth 2.0 integration

  • Multi-tenant: Each user has their own database connection

  • Railway Ready: Optimized for Railway cloud deployment

  • Production Safe: Session management, security controls, and health monitoring

Tools (9)

  • query

    Execute SQL queries against the database

  • describe_table

    Get detailed information about a table's structure

  • get_foreign_keys

    Get foreign key relationships for a table

  • find_relationships

    Discover both explicit and implied relationships for a table

  • db_identity

    Show current db/user/host/port, search_path, and version

  • auth_info

    Get authentication status and login instructions

  • server_info

    Server configuration and capabilities

  • write_safe_select

    prompt_write_safe_select_tool

  • explain_plan_tips

    prompt_explain_plan_tips_tool

Details on this page are taken from the project's README. Open README

Supported clients

Clients mentioned in this server's README:

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