[exe.dev co-founder here] This grew out of our work on sketch. We built a container-based system for it, and found ourselves saying "I wish we just had a computer." This is our answer to that.
If you are interested in our work and agents, I would suggest trying Shelley, the little agent we have in exe.dev. There has been some discussion about what to do with sketch on its discord channel, but we won't be putting energy into it going forward.
(A blog post with far more details is in the works.)