DeepL
Enables translation and text rephrasing using DeepL's API through a cloud-deployed MCP server. Provides translation between multiple languages, text rephrasing, and language detection capabilities with professional deployment features.
What is DeepL?
DeepL is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to enables translation and text rephrasing using deepl's api through a cloud-deployed mcp server. provides translation between multiple languages, text rephrasing, and language detection capabilities wit...
Enables translation and text rephrasing using DeepL's API through a cloud-deployed MCP server. Provides translation between multiple languages, text rephrasing, and language detection capabilities with professional deployment features.
This server falls under the Communication category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- Enables translation and text rephrasing using DeepL's API th
Use Cases
Maintainer
Works with
Installation
NPM
npx -y deepl-mcp-serverManual Installation
npx -y deepl-mcp-serverConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use DeepL
The DeepL MCP Server is an official integration published by DeepL that connects AI assistants to DeepL's professional translation API, enabling high-quality translation between dozens of languages, document translation for PDF, DOCX, PPTX, XLSX, HTML, and TXT files, text rephrasing with tone and style controls, language detection, and glossary management — all through natural language. Writers, developers, and businesses use it to seamlessly translate and rephrase content from within Claude and other MCP clients without leaving their workflow or copying text into a separate translation tool.
Prerequisites
- A DeepL API account with a valid API key (free or Pro tier, available at deepl.com/pro-api)
- Node.js 18 or later
- npx available on your PATH
- An MCP-compatible client such as Claude Desktop or Claude Code
Obtain a DeepL API key
Sign up for a DeepL API account at https://www.deepl.com/pro-api. Both the free tier (500,000 characters/month) and Pro tier are supported. Copy the API key from your account dashboard.
Add the DeepL MCP server to Claude Code
Use the claude mcp add command to register the server and pass your API key as an environment variable.
claude mcp add deepl -e DEEPL_API_KEY=your-api-key -- npx deepl-mcp-serverOr add to Claude Desktop manually
Edit the Claude Desktop configuration file and add the mcpServers entry for DeepL. The config file location varies by OS.
Verify the connection
Ask your AI client to list supported languages. If DeepL is connected correctly, it will return the full list of source and target languages via the get-source-languages and get-target-languages tools.
Start translating and rephrasing content
Use natural language to request translations, document processing, or text rephrasing. The server automatically selects the correct tool based on your request.
DeepL Examples
Client configuration
Add the DeepL MCP server to Claude Desktop by editing the configuration file. Replace the placeholder with your actual API key.
{
"mcpServers": {
"deepl": {
"command": "npx",
"args": ["deepl-mcp-server"],
"env": {
"DEEPL_API_KEY": "your-deepl-api-key-here"
}
}
}
}Prompts to try
Use natural language to translate text, rephrase content, and manage glossaries through your AI client.
- "Translate this text to German: 'The deployment succeeded without errors'"
- "Translate the attached DOCX file to French"
- "Rephrase this paragraph in a more formal tone"
- "What writing styles does DeepL support for rephrasing?"
- "List all my DeepL glossaries"
- "Detect the language of this text: 'Bonjour, comment allez-vous?'"
- "Translate to Japanese with formal formality level: 'Please review the attached report'"Troubleshooting DeepL
Authentication error: Invalid API key
Double-check the DEEPL_API_KEY value in your config — free-tier keys end in ':fx' while Pro keys do not. Copy the key directly from the DeepL account dashboard to avoid whitespace issues.
Document translation fails for large files
DeepL's document translation API has file size limits (10 MB for most formats). Split large documents before uploading, or use the text translation tool for shorter content.
npx deepl-mcp-server is slow to start
Install the package locally to avoid repeated npm downloads: 'npm install -g deepl-mcp-server'. Then update the command in your config from 'npx' to 'deepl-mcp-server' with no args array needed.
Frequently Asked Questions about DeepL
What is DeepL?
DeepL is a Model Context Protocol (MCP) server that enables translation and text rephrasing using deepl's api through a cloud-deployed mcp server. provides translation between multiple languages, text rephrasing, and language detection capabilities with professional deployment features. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install DeepL?
Install via npm with the command: npx -y deepl-mcp-server. Then add the server configuration to your AI client's JSON config file (e.g., claude_desktop_config.json or .cursor/mcp.json).
Which AI clients work with DeepL?
DeepL works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is DeepL free to use?
Yes, DeepL is open source and available under the MIT License license. You can use it freely in both personal and commercial projects.
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Browse More Communication MCP Servers
Explore all communication servers available in the MCPgee directory. Each server includes setup guides for Claude, Cursor, and VS Code.
Set Up DeepL in Your Editor
Choose your AI client for step-by-step setup instructions.
Quick Config Preview
Add this to your claude_desktop_config.json or .cursor/mcp.json
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