SmallJS ( https://small-js.org ) is a file based Smalltalk with full agent support. Here's a vid of Claude converting a Counter app into a Tic-tac-toe game in a single shot: https://www.youtube.com/watch?v=4_ir6h2MIRg PS The context loading step is not even necessary anymore. The reason why this works so well, is that Claude knows its way around VSCode well. And all SmallJS projects (apps) have full unit tests and GUI tests that run in a couple of seconds. Claude also reads these tests and can make new ones, maintaining coverage. In tradtional live Smalltalks like Pharo, modifying stuff is easy, but running full tests not so much..