Individual skill

axiom-performance

Use when an Apple-platform app feels slow, memory grows, battery drains, or ANY performance issue needs diagnosing. Covers memory leaks, profiling, Instruments workflows, retain cycles, optimization.

axiom-cursor/skills/axiom-performance/SKILL.md

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Observed behavior: Network or broad shell
Last checked: Nov 10, 2026

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Repository stars (not skill ratings): 1,257
Repository last updated: Nov 8, 2026
License: MIT

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engineering Derived category

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SKILL.mdcore · 19,844 bytes
skills/app-launch.mddoc · 24,263 bytes
skills/energy-diag.mddoc · 15,373 bytes
skills/energy-ref.mddoc · 28,887 bytes
skills/energy.mddoc · 28,690 bytes
skills/hang-diagnostics.mddoc · 22,191 bytes
skills/memory-debugging.mddoc · 22,370 bytes
skills/metrickit-ref.mddoc · 39,536 bytes
skills/objc-block-retain-cycles.mddoc · 22,895 bytes
skills/performance-profiling.mddoc · 39,373 bytes
skills/swift-performance.mddoc · 36,650 bytes
skills/trace-comparison.mddoc · 7,234 bytes
skills/xctrace-ref.mddoc · 12,860 bytes

Read excerpt


## Cursor MCP Tool Boundary

The `xclog`, `xcsym`, and `xcprof` examples below are reference syntax, not executable commands for Cursor. Map each subcommand to the same-named MCP tool—for example, `xclog launch` to `axiom_xclog_launch`, `xcsym crash` to `axiom_xcsym_crash`, and `xcprof record` to `axiom_xcprof_record`—and preserve its arguments as structured fields. Do not run a bare helper binary. If a required MCP tool is unavailable, stop and report that the Axiom MCP integration is missing; do not fall back to a same-named executable.


# Performance

**You MUST use this skill for ANY performance issue including memory leaks, slow execution, battery drain, or profiling.**

## Cursor Subagent Routing

Delegate to the appropriate Cursor subagent when this router calls for a specialized auditor.

## When to Use