Open WebUI

1. In the admin panel, open Settings → Integrations.

2. Under "Manage Tool Servers", click Add (+).
3. Set the connection type to "MCP Streamable HTTP" (not OpenAPI).
4. Fill in the connection details:
   • Name: Klardaten
   • ID: e.g. klardaten
   • URL: https://api.klardaten.com/mcp
5. For authentication, choose "OAuth 2.1".
6. Click "Register Client" to verify the connection. You can also restrict which users may use the MCP server.
7. Click "Save" to close the dialog.

Use the MCP server in a chat

1. Open a new chat.
2. Choose Tools → Klardaten to open the Klardaten sign-in.

At the Klardaten sign-in, use the key from your invitation or your existing Klardaten login:

• API Key: paste your personal key from the invitation.
• Credentials: use your existing Klardaten email and password.

Once you confirm, the tool is available in the chat.