PostgreSQL MCP Server

by DanielRSnell
Verified

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

Integrations

  • Supports deployment via Docker containers, with special configuration options for Docker on macOS environments.

  • Provides specific host configuration guidance when running with Docker on macOS systems.

  • Provides read-only access to PostgreSQL databases, allowing for schema inspection and execution of read-only SQL queries against connected databases.

PostgreSQL

A Model Context Protocol server that provides read-only access to PostgreSQL databases. This server enables LLMs to inspect database schemas and execute read-only queries.

Components

Tools

  • query
    • Execute read-only SQL queries against the connected database
    • Input: sql (string): The SQL query to execute
    • All queries are executed within a READ ONLY transaction

Resources

The server provides schema information for each table in the database:

  • Table Schemas (postgres://<host>/<table>/schema)
    • JSON schema information for each table
    • Includes column names and data types
    • Automatically discovered from database metadata

Usage with Claude Desktop

To use this server with the Claude Desktop app, add the following configuration to the "mcpServers" section of your claude_desktop_config.json:

Docker

  • when running docker on macos, use host.docker.internal if the server is running on the host network (eg localhost)
  • username/password can be added to the postgresql url with postgresql://user:password@host:port/db-name
{ "mcpServers": { "postgres": { "command": "docker", "args": [ "run", "-i", "--rm", "mcp/postgres", "postgresql://host.docker.internal:5432/mydb"] } } }

NPX

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

Replace /mydb with your database name.

Building

Docker:

docker build -t mcp/postgres -f src/postgres/Dockerfile .

License

This MCP server is licensed under the MIT License. This means you are free to use, modify, and distribute the software, subject to the terms and conditions of the MIT License. For more details, please see the LICENSE file in the project repository.

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security - not tested
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license - not found
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quality - not tested

Provides read-only access to PostgreSQL databases, enabling LLMs to inspect database schemas and execute read-only SQL queries within a secure transaction context.

  1. Components
    1. Tools
    2. Resources
  2. Usage with Claude Desktop
    1. Docker
    2. NPX
  3. Building
    1. License