Self-evolving agents need source-code access, not just prompt editing—structural bugs in routing and state management can't be fixed by text-layer changes alone, and MOSS demonstrates this works in production with measurable improvements.
MOSS is a system that lets autonomous agents automatically fix themselves by rewriting their own source code based on real failures. Unlike existing approaches that only modify text files like prompts, MOSS can change the actual code structure—routing logic, state management, dispatch—making it possible to fix a much broader class of problems.