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DeepL

Created 6 months ago

A Model Context Protocol (MCP) server that provides translation capabilities using the DeepL API.

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development documentation public translation API

What is DeepL?

Translate or rewrite text with [DeepL](https://deepl.com)'s very own AI models using [the DeepL API](https://developers.deepl.com/docs)

Documentation

deepl-mcp-server

Features

  • Translate text between numerous languages
  • Rephrase text using DeepL's capabilities
  • Access to all DeepL API languages and features
  • Automatic language detection
  • Formality control for supported languages

Usage

The easiest way to run this server is to use the npm package without installing anything:

npx deepl-mcp-server

If you want to install this locally, you can do so using npm:

npm install deepl-mcp-server

Alternately, if you want to contribute, you can clone this repository and install dependencies:

git clone https://github.com/DeepLcom/deepl-mcp-server.git
cd deepl-mcp-server
npm install

Configuration# DeepL API Key

You'll need a DeepL API key to use this server. You can get one by signing up at DeepL API. With a DeepL API Free account you can translate up to 500,000 characters/month for free.

Using with Claude Desktop

This MCP server integrates with Claude Desktop to provide translation capabilities directly in your conversations with Claude.

Configuration Steps

  1. Install Claude Desktop if you haven't already
  2. Create or edit the Claude Desktop configuration file:
  • On macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
  • On Windows: %AppData%\Claude\claude_desktop_config.json
  • On Linux: ~/.config/Claude/claude_desktop_config.json
  1. Add the DeepL MCP server configuration.
  2. Replace {ABSOLUTE_PATH_TO_SERVER} with an absolute path to your local copy of this repository.
  3. Replace {YOUR_API_KEY} with your actual DeepL API key.
  4. Restart Claude Desktop.

Once configured, Claude will be able to use the DeepL translation tools when needed.

Available Tools

This server provides the following tools:

  • get-source-languages: Get list of available source languages for translation
  • get-target-languages: Get list of available target languages for translation
  • translate-text: Translate text to a target language
  • rephrase-text: Rephrase text in the same or different language

Tool Details# translate-text

This tool translates text between languages using the DeepL API.

rephrase-text

This tool rephrases text in the same or different language using the DeepL API.

Supported Languages

The DeepL API supports a wide variety of languages for translation.

Debugging

For debugging information, visit the MCP debugging documentation.

Error Handling

If you encounter errors with the DeepL API, check the following:

  • Verify your API key is correct
  • Make sure you're not exceeding your API usage limits
  • Confirm the language codes you're using are supported

License

MIT

Links

Server Config 

{
  "mcpServers": {
    "deepl-server": {
      "command": "npx",
      "args": [
        "deepl"
      ]
    }
  }
}

Links & Status

Repository: github.com
Hosted: No
Global: No
Official: Yes

Project Info

Hosted Featured
Created At: Jul 02, 2025
Updated At: Aug 07, 2025
Author: DeepLcom
Category: official
License: MIT
Tags:
development documentation public