PostgreSQL Multi-Schema MCP Server
by HarjjotSinghh
A Model Context Protocol server that provides read-only access to PostgreSQL databases with enhanced multi-schema support. It enables LLMs to inspect database schemas across multiple namespaces and execute read-only queries while maintaining schema isolation.
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What is PostgreSQL Multi-Schema MCP Server?
This is a Model Context Protocol (MCP) server designed to provide read-only access to PostgreSQL databases, specifically focusing on enhanced multi-schema support. It allows Large Language Models (LLMs) to inspect database schemas across multiple namespaces and execute read-only queries while ensuring schema isolation.
How to use PostgreSQL Multi-Schema MCP Server?
To use the server, you need to provide a database URL and a comma-separated list of schemas to expose. Use the command npx -y mcp-server-postgres-multi-schema <database-url> [schemas]. You can also configure it within the claude_desktop_config.json file for use with Claude Desktop.
Key features of PostgreSQL Multi-Schema MCP Server
Multi-Schema Support
Schema Isolation
Cross-Schema Discovery
Metadata Security
Use cases of PostgreSQL Multi-Schema MCP Server
Allowing LLMs to query specific schemas in a PostgreSQL database.
Providing a secure way for LLMs to access database metadata.
Enabling cross-schema data discovery for LLMs.
Integrating with Claude Desktop for database access.
FAQ from PostgreSQL Multi-Schema MCP Server
What is an MCP server?
What is an MCP server?
MCP stands for Model Context Protocol server. It acts as an intermediary, providing a structured way for Large Language Models (LLMs) to interact with data sources like databases.
How does schema isolation work?
How does schema isolation work?
Schema isolation is enforced by restricting access to only the schemas explicitly listed during server startup. This prevents unauthorized access to other schemas within the database.
What kind of queries can be executed?
What kind of queries can be executed?
Only read-only SQL queries are allowed. All queries are executed within a READ ONLY transaction to prevent data modification.
Can I expose all schemas in the database?
Can I expose all schemas in the database?
While technically possible, it's generally recommended to only expose the schemas that are necessary for the LLM's use case to maintain security and reduce complexity.
What happens if I don't specify any schemas?
What happens if I don't specify any schemas?
If no schemas are specified, the server defaults to exposing the 'public' schema.