A bit of a background: I originally started working on OpenClip because I wanted a PopClip-like workflow for free, but I also wanted to be able to build and install my own actions without modifying the main application.

The extension system ended up becoming one of the more interesting parts of the project. Extensions can use JavaScript, shell/Python, AppleScript, or Shortcuts, and the app communicates with them through a relatively small interface.

I'm interested in hearing from other Mac developers about any issues with different applications, especially apps that implement their own text editors or accessibility behavior and also I'd love to hear new extensions ideas.