Yes, thank you very much, @jurgenhaas! Moments after my post I’ve found your suggestion in [SOLVED] How to authenticate bots using the API (I couldn’t post the link in my edited post). That worked for me, too! 
Yes, thank you very much, @jurgenhaas! Moments after my post I’ve found your suggestion in [SOLVED] How to authenticate bots using the API (I couldn’t post the link in my edited post). That worked for me, too!