Postgres Multi Schema MCP Server

MCP server for interacting with PostgreSQL databases, with support for multiple schemas. The postgres multi schema mcp server wraps that behind the Model Context Protocol, so an assistant can use it through 7 defined tools rather than through you.

What it actually does

A Model Context Protocol server that provides read-only access to PostgreSQL databases with enhanced multi-schema support. This server enables LLMs to inspect database schemas across multiple namespaces and execute read-only queries while maintaining schema isolation.

• Multi-Schema Support — Explicitly specify which schemas to expose through command-line configuration
• Schema Isolation — Strict access control to only authorized schemas listed during server startup
• Cross-Schema Discovery — Unified view of tables across multiple schemas while maintaining schema boundaries
• Metadata Security — Filters system catalogs to only expose user-defined tables in specified schemas

Adding it to your client

mcp-server-postgres-multi-schema on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.

Its toolset

Everything the assistant can do here goes through one of these:

• query — Execute read-only SQL queries against the connected database
• Input — sql (string): The SQL query to execute
• database-url — PostgreSQL connection string (e.g., postgresql://localhost/mydb)
• schemas — Comma-separated list of schemas to expose (defaults to 'public' if not specified)
• Tools — The Tools tool exposed by this server
• Resources — The server provides schema information for each table across authorized schemas:
• Examples — The Examples tool exposed by this server

Caveats

• It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
• MCP clients confirm each tool call by default. Leave that on until you have watched what the postgres multi schema mcp server does with a few real requests.

When to reach for it

This sits in the database access group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Postgres Multi Schema's toolset — query, Input, database-url and 4 more — is a fair guide to whether it matches your workflow. It is maintained by HarjjotSinghh; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.