Beyond the Model: Runesmith, an Open Runtime That Improves Software and Itself, and the Instrument–Substrate Hypothesis
Agent systems rent competence from a model one call at a time. We present Runesmith, an open-source runtime (Apache-2.0) in which models propose, a small deterministic kernel admits, and the runtime changes its own code only on evidence. In one iteration of its Kaizen loop, Runesmith chose a weakness from its own telem...