Axiom Performance
This is your routing layer for anything performance related on iOS. Memory leaks, app hangs, slow launch, battery drain, profiling with Instruments or xctrace. The decision tree is thorough and covers the messy edge cases like distinguishing between a hang and just sluggishness, or knowing when memory pressure is causing your frame drops. It bridges to specialized skills for Swift-specific leaks, Objective-C block cycles, energy auditing, and even timer footguns that cause EXC_BAD_INSTRUCTION. The routing logic is opinionated in a good way, like steering you to hang diagnostics first if the UI is completely frozen versus performance profiling if it's just slow. Solid starting point when users report "the app feels off" and you need to narrow down what to instrument.
- skills.sh installs
- 1.4K
- GitHub stars
- 1.3K
- last updated
- Aug 21, 2026
Install
$ npx -y skills add charleswiltgen/axiom --skill axiom-performance --agent claude-codeInstalls into .claude/skills of the current project.
Files
Performance
You MUST use this skill for ANY performance issue including memory leaks, slow execution, battery drain, or profiling.
Bundled tools on Claude Code: if command -v <tool> finds nothing (hooks off or --bare), use <plugin-root>/tools/<tool> in place of the bare name; <plugin-root> is two levels above this skill's Base directory for this skill: path.
Auditors are skills here. Where this router says "Launch
some-auditoragent", invoke the matching Codex skill instead — same procedure, no Claude Code agent required.Available:
axiom-analyze-swift-performance,axiom-audit-energy,axiom-audit-memory.The ones that shell out — builds, tests, simulators, crash symbolication — need shell access to run.
When to Use
Use this router when:
- App feels slow or laggy
- Memory usage grows over time
- Battery drains quickly
- Device gets hot during use
- High energy usage in Battery Settings
- Diagnosing performance with Instruments
- Memory leaks or retain cycles
- App crashes with memory warnings
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- Repository
- github.com/charleswiltgen/axiom
- Categories
- Git & Pull Requests, Debugging
- First seen
- Jun 3, 2026
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