Postgres MCP Server
Read-only Postgres MCP server — let an LLM query your database with full schema awareness.
Postgres MCP Server is a read-only Postgres MCP server — let an LLM query your database with full schema awareness. Provides read-only access to PostgreSQL databases, preventing unintended data modification or deletion.
About Postgres MCP Server
Postgres MCP Server is an MCP server that lets an LLM query a PostgreSQL database with full schema awareness, using the Model Context Protocol to connect to MCP-compatible clients.
Its distinguishing trait is a read-only design: data cannot be inserted, updated, or deleted through the server, so an agent can explore your database without risk of unintended changes. Because it exposes the full schema, the model can generate queries that reflect your actual tables and columns.
It fits developers who want an agent to read from Postgres locally and free of charge on macOS, Windows, or Linux. It is not for anyone who needs write access, another database engine, or a hosted setup — it is Postgres-only and requires self-hosting plus manual connection configuration.
Among MCP database connectors, this is the narrow, read-only Postgres option rather than a multi-engine or read-write tool.
Sources: this listing
What it does well
- Provides read-only access to PostgreSQL databases, preventing unintended data modification or deletion.
- Exposes full database schema awareness so LLMs can generate accurate, context-aware queries.
- Implements the Model Context Protocol for standardized tool integration with MCP-compatible LLM clients.
- Free to use and runs locally across macOS, Windows, and Linux platforms.
Where it falls short
- Read-only design means data cannot be inserted, updated, or deleted through the server.
- Limited to PostgreSQL and does not support other database engines.
- Requires self-hosting and manual configuration of database connection details.
Tagged
- Self-hostable
- Supports Claude
- CLI
- MCP Support
- Free
- Open Source
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</a>Frequently asked questions
- What is Postgres MCP Server?
- Postgres MCP Server is a read-only Postgres MCP server — let an LLM query your database with full schema awareness.
- Is Postgres MCP Server free?
- Postgres MCP Server is free to use. There is no paid tier as of the last index update.
- What platforms does Postgres MCP Server support?
- Postgres MCP Server runs on mac, win, linux, cli.
- What category does Postgres MCP Server belong to?
- Postgres MCP Server is in the MCP Servers category — Implementations of the Model Context Protocol — file, database, API, and browser servers that LLM clients can plug into.
- What are the downsides of Postgres MCP Server?
- Read-only design means data cannot be inserted, updated, or deleted through the server. Limited to PostgreSQL and does not support other database engines. Requires self-hosting and manual configuration of database connection details.