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MEC Postgres

MEC Postgres

Local
github.com/PratyeDatabases0Updated 80w ago
Repository

About MEC Postgres

MEC Postgres is an MCP server for PostgreSQL that lets LLMs inspect table schemas and run queries. It separates read-only SQL querying from CSV upload processing, which can write data to database tables.

Key features

  1. 01Run read-only SQL queries
  2. 02Upload and process CSV files
  3. 03Load CSV data into database tables
  4. 04Provide table schema JSON resources
  5. 05Discover columns and types from database metadata

Use cases

  1. 01Inspect PostgreSQL table schemas
  2. 02Run read-only database queries
  3. 03Import CSV data into database tables

MCP support

The server exposes SQL query and CSV upload tools to MCP clients, along with schema resources containing column names and data types. Queries use read-only transactions, while CSV processing uses read-write transactions.

#postgresql#postgres#database

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

mcp.json · Universal config
{
  "mcpServers": {
    "MEC-Postgres": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "mcp/postgres"
      ]
    }
  }
}
Run commanddocker run -i --rm mcp/postgres

Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.

Packages
ocimcp/postgres

Tools

No tool list yet

Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.

Details

From the project README

MEC PostgreSQL

A Model Context Protocol server that provides read and write access to PostgreSQL databases. This server enables LLMs to inspect database schemas and execute read and write queries.

Components

Tools
  • query
    • Execute read-only SQL queries against the connected database
    • Input: sql (string): The SQL query to execute
    • All queries are executed within a READ ONLY transaction
  • uploadCsv
    • Upload and process a CSV file into database tables
    • Input: sql (string): The SQL query to execute
    • All queries are executed within a READ AND WRITE transaction
Resources

The server provides schema information for each table in the database:

  • Table Schemas (postgres://<host>/<table>/schema)
    • JSON schema information for each table
    • Includes column names and data types
    • Automatically discovered from database metadata

Usage with Claude Desktop

To use this server with the Claude Desktop app, add the following configuration to the "mcpServers" section of your claude_desktop_config.json:

Docker
  • when running docker on macos, use host.docker.internal if the server is running on the host network (eg localhost)
  • username/password can be added to the postgresql url with postgresql://user:password@host:port/db-name
{
  "mcpServers": {
    "postgres": {
      "command": "docker",
      "args": [
        "run", 
        "-i", 
        "--rm", 
        "mcp/postgres", 
        "postgresql://host.docker.internal:5432/mydb"]
    }
  }
}

Replace /mydb with your database name.

Building

Docker:

docker build -t mcp/postgres -f src/postgres/Dockerfile .

License

This MCP server is licensed under the MIT License. This means you are free to use, modify, and distribute the software, subject to the terms and conditions of the MIT License. For more details, please see the LICENSE file in the project repository.

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