Web Audio API audio editor saving edited clip back onto web server

I am making a drum machine and have implemented a recording function using recorderJS library. The problem as you may expect is limited functionality in terms of not been able to edit the recorded clips. So my question is if I was to implement an audio editor that allows the user to trim the clip, how would I go about saving the edited clip back onto the web server?

Is this even possible using Web Audio API?

Many Thanks