Hello, as I understand there is no way to know by Admin API if there any Extensions in a running wiremock service? And the only info that I can get is in the beggining of service logs? Using wiremock standalone 3.3.1

Yes, that’s currently the case. There’s an issue open along similar lines, which we’ll accept a PR for I think: https://github.com/wiremock/wiremock/issues/2540