# DeepL MCP Server An MCP (Model Context Protocol) server providing DeepL translation capabilities. ## Features This server exposes the following tools via MCP: * **`translate_text`**: Translates one or more text strings between supported languages using the DeepL API. * **`list_languages`**: Retrieves the list of languages supported by the DeepL API (either source or target languages). ## Prerequisites * **Node.js and npm/yarn:** Required to install dependencies and run the server. * **DeepL API Key:** You need an API key from DeepL. Both Free and Pro plans provide API access. Sign up or learn more at [https://www.deepl.com/pro-api](https://www.deepl.com/pro-api). ## Installation 1. **Clone the repository:** ```bash git clone https://github.com/watchdealer-pavel/deepl-mcp-server.git cd deepl-mcp-server ``` 2. **Install dependencies:** ```bash npm install # or # yarn install ``` 3. **Build the server:** ```bash npm run build ``` This command compiles the TypeScript source code into JavaScript, placing the output in the `build/` directory (specifically `build/index.js`). ## Configuration The server requires your DeepL API key to be provided via the `DEEPL_API_KEY` environment variable. You need to configure your MCP client (like Cline/Roo Code or the Claude Desktop App) to run this server and pass the environment variable. **Example Configuration:** Below are examples for common MCP clients. **Remember to replace `/path/to/your/deepl-mcp-server/build/index.js` with the actual absolute path to the compiled server file on your system, and `YOUR_DEEPL_API_KEY` with your real DeepL API key.** ### Cline / Roo Code (VS Code Extension) 1. Open your VS Code settings for MCP servers. On macOS, this is typically located at: `~/Library/Application Support/Code/User/globalStorage/rooveterinaryinc.roo-cline/settings/mcp_settings.json` *(Note: The exact path might vary based on your operating system and VS Code installation type (e.g., Insiders).)* 2. Add the following configuration block under the `mcpServers` key: ```json "deepl-translator": { "command": "node", "args": ["/path/to/your/deepl-mcp-server/build/index.js"], // <-- IMPORTANT: Replace with the ACTUAL absolute path to build/index.js "env": { "DEEPL_API_KEY": "YOUR_DEEPL_API_KEY" // <-- IMPORTANT: Replace with your DeepL API Key }, "disabled": false, "alwaysAllow": [] } ``` ### Claude Desktop App 1. Open the Claude Desktop App configuration file. On macOS, this is typically located at: `~/Library/Application Support/Claude/claude_desktop_config.json` *(Note: The exact path might vary based on your operating system.)* 2. Add the following configuration block under the `mcpServers` key: ```json "deepl-translator": { "command": "node", "args": ["/path/to/your/deepl-mcp-server/build/index.js"], // <-- IMPORTANT: Replace with the ACTUAL absolute path to build/index.js "env": { "DEEPL_API_KEY": "YOUR_DEEPL_API_KEY" // <-- IMPORTANT: Replace with your DeepL API Key }, "disabled": false, "alwaysAllow": [] } ``` ## Usage Once configured, you can invoke the server's tools from your AI assistant using the `use_mcp_tool` command/tool. ### `list_languages` Example ```xml deepl-translator list_languages { "type": "target" // Optional: "source" or "target". Defaults to listing all if omitted. } ``` ### `translate_text` Example ```xml deepl-translator translate_text { "text": ["Hello world", "How are you?"], // Required: An array of strings to translate "target_lang": "DE", // Required: Target language code (e.g., DE, FR, ES) "source_lang": "EN" // Optional: Source language code. DeepL will auto-detect if omitted. } ``` ## License This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.