Connect DeepL to Microsoft Copilot

Prerequisites

• DeepL AI connectors are enabled for your team. Reach out to your team admin to enable DeepL usage in AI assistants or to add an app to ChatGPT. For more information, see this article. 
• A Microsoft Copilot Studio license
• Generative orchestration is enabled on your agent (default)
• Organization policies apply: MCP connections in Copilot Studio go through Power Platform connectors. Therefore, your organization’s data loss prevention (DLP) policies apply and may block the connection. Contact your Microsoft admin if you cannot add the connector.

Connect DeepL to Microsoft Copilot by creating an agent

You can set up your DeepL Copilot by using the DeepL account login or a DeepL API key. For more information, see this article. 

Create a blank agent

1. Open Copilot Studio
2. Click Create blank agent and enter a name for the agent, e.g. DeepL

Add DeepL as a tool

1. In the agent, go to Tools
2. Select Add a tool | New tool | Model Context Protocol
   The MCP onboarding wizard will start.
3. Enter the following information
• Server name: DeepL
• Server description: Translates and rephrases text between languages using DeepL. It supports glossaries, writing styles, and tones.
• Enter the server URL depending on how you want to connect:
  • DeepL account login: https://mcp.deepl.com/v1/mcp
  • DeepL API key: https://mcp-api.deepl.com/v1/mcp
• Select the authentication method depending on how you want to connect:
  • DeepL account login: Select OAuth 2.0, then Dynamic discovery as the type
  • DeepL API key: Select API key, set Type to Header and Header name to Authorization

Create the connector

1. Click Create. Copilot Studio generates a connector for DeepL and the Add tool dialog appears.
2. Select Create a new connection:
   • DeepL Connector: sign in with your DeepL account in the window that opens and click Allow
   • DeepL API Connector: paste your DeepL API key including the prefix: 
     DeepL-Auth-Key <YOUR_API_KEY>
     Replace <YOUR_API_KEY> with your API key. For more information about API keys, see this article. 

Add the tool to your agent

1. Once the connection shows as connected, select Add and configure
2. Under Manage your connections, verify that the DeepL connection is listed as Connected

Publish the agent

To allow others to access the agent, share and publish it. For more information, see the Microsoft documentation.