- Add an "MCP Client" node to your workflow.
- Configure it:
- MCP Endpoint URL:
https://api.klardaten.com/mcp - Authentication: MCP OAuth
- MCP Endpoint URL:
- Create a new credential under "Credential for MCP OAuth2 API".

- In the credential:
- Leave "Use Dynamic Client Registration" enabled.
- Set "Server URL" to https://api.klardaten.com/mcp.
- Click "Connect to MCP".

You will see the same OAuth flow as in Open WebUI.

When authorization finishes, the tool list shows the available DATEVconnect tools.
