MCP Postgres Query Server
by RathodDarshil
This is a Model Context Protocol (MCP) server implementation for querying a PostgreSQL database in read-only mode. It is designed to work with Claude Desktop and other MCP clients.
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What is MCP Postgres Query Server?
This server is a Model Context Protocol (MCP) server that provides a secure, read-only interface to a PostgreSQL database. It integrates with Claude Desktop through the MCP protocol and validates SQL queries to ensure only SELECT queries are executed, with a query timeout protection of 10 seconds.
How to use MCP Postgres Query Server?
To use this server, you need to clone the repository, install dependencies using npm, build the project, and then configure Claude Desktop to connect to the server by adding the server configuration to the mcpServers section of the claude_desktop_config.json file, providing the path to the built server and the PostgreSQL connection string.
Key features of MCP Postgres Query Server
Read-Only Database Access
Query Validation
Timeout Protection
MCP Protocol Support
JSON Response Formatting
Use cases of MCP Postgres Query Server
Securely querying PostgreSQL databases from Claude Desktop
Providing read-only access to data for AI models
Integrating PostgreSQL data with MCP-compatible applications
Validating SQL queries to prevent harmful operations
FAQ from MCP Postgres Query Server
What kind of queries are allowed?
What kind of queries are allowed?
Only SELECT queries are permitted for security reasons.
How is security ensured?
How is security ensured?
The server validates all queries to ensure they are read-only, uses SSL for database connections, and implements a query timeout to prevent resource exhaustion.
How do I configure the server to connect to my database?
How do I configure the server to connect to my database?
You need to provide the PostgreSQL connection string as a command line argument when configuring the server in Claude Desktop's configuration file.
What happens if a query takes too long?
What happens if a query takes too long?
Queries running longer than 10 seconds are automatically terminated to prevent resource exhaustion.
How do I update the server code?
How do I update the server code?
After making changes to the code, rebuild the project with npm run build and restart Claude Desktop for the changes to take effect.