DeepSeek Reasoner MCP server

This MCP server enables Claude to leverage DeepSeek R1's advanced reasoning capabilities for complex tasks, enhancing Claude's ability to generate thoughtful, multi-step reasoning responses.

Installation Options

Quick Installation via Smithery

If you're using Claude Desktop, you can install the DeepSeek-Claude server automatically:

npx -y @smithery/cli install @HarshJ23/deepseek-claude-MCP-server --client claude

Manual Installation

Prerequisites

• Python 3.12 or higher
• uv package manager
• DeepSeek API key (Sign up at DeepSeek Platform)

Installation Steps

1. Clone the Repository

   git clone https://github.com/harshj23/deepseek-claude-MCP-server.git
   cd deepseek-claude-MCP-server
   

2. Set Up UV Package Manager

   • Windows (PowerShell):

     powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"
     

   • Mac:

     curl -LsSf https://astral.sh/uv/install.sh | sh
     

3. Create and Activate Virtual Environment

   uv venv
   source .venv/bin/activate
   

4. Install Required Dependencies

   uv add "mcp[cli]" httpx
   

5. Obtain DeepSeek API Key Get your API key from: https://platform.deepseek.com/api_keys

Configuration

Configure Claude Desktop

Edit the claude_desktop_config.json file to include the following configuration:

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

Make sure to replace the path with the absolute path to your installation folder.

Start the Server

Run the server using the UV package manager:

uv run server.py

Verify Installation

1. Restart Claude Desktop
2. Check that the tools icon appears in the Claude interface
3. The server should now be visible and ready to use

Usage

The DeepSeek-Claude MCP server works behind the scenes when used with Claude Desktop. When Claude encounters a query requiring advanced reasoning:

1. The query is automatically forwarded to DeepSeek R1
2. DeepSeek R1 processes the query using its reasoning engine
3. The structured reasoning is returned wrapped in <ant_thinking> tags
4. Claude incorporates this reasoning into its final response

You don't need to explicitly invoke the tool - Claude will automatically leverage the DeepSeek reasoning capabilities when appropriate for complex reasoning tasks.

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-claude" '{"command":"uv","args":["run","server.py"]}'

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-claude": {
            "command": "uv",
            "args": [
                "run",
                "server.py"
            ]
        }
    }
}

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-claude": {
            "command": "uv",
            "args": [
                "run",
                "server.py"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect