This is the API reference companion to the axiom energy optimization skills, basically a lookup table for iOS power profiling APIs with WWDC code examples. You'd pull this in when you're actively debugging battery drain and need the exact Instruments workflow or API calls without digging through Apple docs. It covers the full Power Profiler setup, from tethered recording to trace analysis. It's part of a three skill set (decision trees, reference, diagnostics), so you'll probably want the other axiom energy skills too unless you only need quick API lookups. With 948 GitHub stars and 175 installs, it seems like the go-to for iOS power work, though it did fail one security audit.
npx skills add https://github.com/charleswiltgen/axiom --skill axiom-energy-ref