MCP Postgres — MCP Protocol

A server that queries a PostgreSQL DB read-only

Basic information

What is this program?

This server is a read-only PostgreSQL DB querying server implementation included in the MCP official reference server collection. It can be run with a single npx command, and once registered in the settings of an MCP host app, agents can use it immediately.

Main use: agents query DB schemas and data

What problems does it solve?

• ('when working with postgres', 'when an agent needs to use server functionality for read-only querying of a PostgreSQL DB', 'connect immediately via standard MCP tools')
• ('Quick connection', 'when you need to run it with npx without setting up a separate server', 'reuse the official implementation')
• ('Safe access', 'when you need to restrict the allowed scope while accessing', 'restrict via path and permission parameters')

Key features

Exposed tools

query, list_tables, describe_table

• Use case: provides agents with the ability to query DB schemas and data
• What you get: standard MCP tool calls
• Limitations: permission settings require caution

Installation and execution

npx (execution)

Run @modelcontextprotocol/server-postgres with npx.

npx -y @modelcontextprotocol/server-postgres /path

Real-world usage examples

Registering with a host

Add a server entry to mcp.json.

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

Advantages and limitations

Advantages

• Official project implementation
• Run with a single npx command
• Exposes standard MCP tools

Before using

• Requires host app configuration
• Be careful with permission and path settings

Comparison with similar programs

Official resources and further learning

• Official homepage — https://github.com/modelcontextprotocol/servers
• Official documentation / knowledge base — https://github.com/modelcontextprotocol/servers
• Installation & deployment — npx -y @modelcontextprotocol/server-postgres
• Release notes — https://github.com/modelcontextprotocol/servers/releases
• Source / development resources — https://github.com/modelcontextprotocol/servers

Version and supported environment information is based on values checked on the official site as of 2026-10-18. Installation commands may vary depending on your distribution and version, so please also check the official installation documentation.

Actual execution screen

Synthetic example — not an actual execution result. The screen is a synthetic example and not an actual execution result.

!MCP Postgres usage example

A server in actual operation

Source (HTML): https://games.aidebatehub.com/programs/mcp/protocol/server-postgres.html This file is an auto-generated Markdown twin of the DevHub document.