Mercari Jp MCP

Demo

Requirements

• Python 3.11 or higher
• Dependencies as listed in pyproject.toml, including:
  • mcp
  • mercari
  • pydantic

Pre-setup

1. uv https://docs.astral.sh/uv/getting-started/installation/

2. Microsoft C++ Build Tools (For Windows) https://visualstudio.microsoft.com/visual-cpp-build-tools/

Setup

1. Clone this repository:

   git clone https://github.com/msr2903/mercari-jp-mcp.git
   cd mercari-jp-mcp
   

2. Create and activate a virtual environment and install dependencies:

   uv venv
   source .venv/bin/activate  # On Windows: .venv\Scripts\activate
   uv pip install -e .
   

Usage

Development Mode

You can test the server with MCP Inspector by running:

uv run server.py

You can also test to input manually the query, exclude keywords, min and max price by running:

uv run check_server.py

This will start the server and allow you to test the available tools.

Integration with Claude for Desktop

To integrate this server with Claude for Desktop:

1. Install Claude for Desktop to your local machine.

2. Install VS Code to your local machine. Then run the following command to open the claude_desktop_config.json file:

   • MacOS: code ~/Library/Application\ Support/Claude/claude_desktop_config.json
   • Windows: code $env:AppData\Claude\claude_desktop_config.json

3. Edit the Claude for Desktop config file, located at:

   • macOS:

     {
       "mcpServers": {
         "mercari": {
           "command": "uv",
           "args": [
             "--directory",
             "/ABSOLUTE/PATH/TO/PARENT/FOLDER/mercari-jp-mcp",
             "run",
             "server.py"
           ]
         }
       }
     }
     

   • Windows:

     {
       "mcpServers": {
         "mercari": {
           "command": "uv",
           "args": [
             "--directory",
             "C:\\ABSOLUTE\\PATH\\TO\\PARENT\\FOLDER\\mercari-jp-mcp",
             "run",
             "server.py"
           ]
         }
       }
     }
     

   • Note: You may need to put the full path to the uv executable in the command field. You can get this by running which uv on MacOS/Linux or where uv on Windows.

4. Restart Claude for Desktop

Thanks

This work would not have been possible without amazing open source projects, including (but not limited to):

• jlowin/fastmcp (https://github.com/jlowin/fastmcp)
• marvinody/mercari (https://github.com/marvinody/mercari/)

Thank you to the authors of these projects for making them available to the community!