This is your go-to for building on-device AI features using Apple's Foundation Models framework. It covers the practical stuff like text summarization, classification, structured output generation, and tool-calling patterns, plus streaming for better UX. What makes this worth grabbing is the focus on real implementation details and debugging help for the common headaches like context overflow and slow generation. With 945 GitHub stars and 191 installs, it's clearly solving a real problem for developers shipping local AI features on iOS and macOS. The companion diagnostic and reference skills suggest this is part of a more complete toolkit rather than just API docs dumped into a skill.
npx skills add https://github.com/charleswiltgen/axiom --skill axiom-foundation-models