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Pg MCP Server

Pg MCP Server

一个通用的PostgreSQL MCP服务器,支持PostGIS和PgVector扩展,通过预加载数据库表结构信息优化LLM上下文管理,提供安全的数据访问隔离机制。
2分
1
2025-04-28 15:50:55
概述
内容详情
替代品

What is PG_MCP_SERVER?

A specialized server that bridges PostgreSQL/PostGIS databases with Large Language Models (LLMs). It intelligently manages database schema information to optimize context usage when working with LLMs.

How to use PG_MCP_SERVER?

The server connects to your PostgreSQL database, pre-processes schema information, and provides structured data to LLMs through MCP protocol. It supports both standard and PostGIS-enhanced PostgreSQL databases.

Use Cases

Ideal for applications where LLMs need to interact with PostgreSQL databases, especially with spatial data (PostGIS) or vector data (PgVector). Useful for data analysis, natural language query interfaces, and automated database documentation.

Key Features

PostgreSQL IntegrationFull support for PostgreSQL database operations and schema management
PostGIS SupportSpecial handling for spatial data types and operations (✅ Supported)
PgVector SupportSupport for vector similarity operations (✅ Supported)
Schema Pre-processingPre-loads table structures to optimize LLM context usage

Pros and Cons

Advantages
Reduces LLM token usage by pre-processing schema information
Supports both standard and spatial database operations
Implements security best practices with role-based access
Provides data isolation through temp schema
Limitations
Requires initial database configuration
Temp schema management needs improvement
PgRouting support not yet implemented (⭕)
Limited to PostgreSQL database systems

Getting Started

Database SetupCreate a dedicated database role with appropriate permissions
Server ConfigurationSet the database connection string in main.go or via .env file
Run the ServerStart the server using Docker or directly via Go

Usage Scenarios

Natural Language Query InterfaceAllow users to query spatial data using natural language which gets converted to proper PostGIS queries
Database DocumentationAutomatically generate database schema documentation for new team members

Frequently Asked Questions

1
Why do I need to create a special database role?For security reasons - it limits what the server can access and prevents SQL injection
2
What's the purpose of the temp schema?It provides isolated space for temporary operations while keeping your main data secure
3
Can I use this with other database systems?Currently only PostgreSQL is supported, with extensions for PostGIS and PgVector

Additional Resources

go-mcp ProjectThe MCP implementation used by this server
Original InspirationProject that inspired the PostGIS and PgVector descriptions
中文文档Chinese language documentation
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