Short answer: You can get authenticated user in LinkedIn by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the LinkedIn Get Authenticated User action to a workflow, map its 0 inputs from any upstream app, and it runs automatically every time the trigger fires. No code, and a free tier to start.
{}
{"sub": "abc-123","name": "Jane Doe","email": "jane@x.com","picture": "https://media.licdn.com/..."}
Use these fields in downstream nodes for routing, logging, or error handling.
Any of these apps can fire this action as part of a workflow.