Deepseek MCP server

The MCP Thinking Server allows you to extract the thinking chain of thought from the Deepseek R1 reasoning model and use it with Claude Desktop or any other MCP client. It bridges these systems to enhance your AI reasoning capabilities.

Installation

To get started with the MCP Thinking Server, follow these steps:

Prerequisites

• Bun runtime environment
• A Deepseek API key

Installing Dependencies

Install the required dependencies using Bun:

bun install

Configuration Setup

Run the setup script to create the MCP configuration file:

bun setup

During the setup, you'll be prompted to enter your Deepseek API key.

Usage

Starting the Server

After completing the installation and setup, the MCP Thinking Server is ready to use.

Connecting with Claude Desktop

1. Open Claude Desktop on your system
2. The MCP Thinking Server should automatically connect with Claude Desktop
3. You can now use the Deepseek R1 reasoning model's thinking capabilities through the Claude interface

Testing the Connection

If you want to verify that everything is working correctly, you can run the included tests:

First, create a test environment file:

cp .env.test.example .env.test

Then run the tests:

bun test

Troubleshooting

If you encounter connection issues:

• Make sure your Deepseek API key is valid
• Verify that the MCP server is running
• Check that Claude Desktop is properly installed and configured
• Review any error messages in the terminal where the MCP server is running

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "deepseek" '{"command":"bun","args":["run","start"]}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "deepseek": {
            "command": "bun",
            "args": [
                "run",
                "start"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "deepseek": {
            "command": "bun",
            "args": [
                "run",
                "start"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect