Mercury MCP Server

Python MCP (Model Control Protocol) server that provides access to Mercury bank accounts through the Mercury API. It's currently READ ONLY

Clients

Any client that supports MCP should work but this has only been tested with Claude Desktop.

Setup

1. Clone this repository
2. Create new virtual environment, activate it and install dependencies:

   python3 -m venv .venv && source .venv/bin/activate
   pip install -r requirements.txt
   

3. Create a .env file in the root directory with your Mercury API key:

   MERCURY_API_KEY=your_mercury_api_key_here
   

   You can obtain an API key from the Mercury developer dashboard.

Usage

Install on Claude Desktop

Edit ~/Library/Application\ Support/Claude/claude_desktop_config.json and add the MCP server

{
  "mcpServers": {
    "mercury": {
      "command": "<fully qualified path>/uv",
      "args": [
        "run",
        "--with",
        "mcp[cli]",
        "mcp",
        "run",
        "<fully qualified path>/mcp-mercury.py"
      ]
    }
  }
}

Security Note

This server requires your Mercury API key which has access to sensitive financial information. Never share your API key or commit it to version control.