I adding RPC to my agent that we are developing in python. I think I have it ready for testing, but I am looking for a javascript front-end to test it. I was looking into agent-started-react example, but it seems like it is missing RPC. do you have any advise of what other example to use to test my agent written in python ?

There is no single 'generic' RPC front-end but many of the complex examples at https://github.com/livekit-examples/python-agents-examples/tree/main/complex-agents use RPC in their custom front-end. E.g. https://github.com/livekit-examples/python-agents-examples/blob/main/complex-agents/teleprompter/teleprompter-frontend/components/teleprompter.tsx