Summary
If you're doing automated profiling with Xcode's Instruments or need to collect performance traces in CI/CD without spinning up the GUI, this is your reference. It covers xctrace, the command line tool that powers Instruments.app, with practical examples for CPU profiling, headless trace collection, and XML export for programmatic analysis. The skill targets Xcode 12+ environments and was tested with Xcode 26.2. It's part of charleswiltgen's axiom collection, which has picked up solid traction with 945 stars and 176 installs. Straightforward documentation for a tool that's powerful but not exactly well documented by Apple.
Install to Claude Code
npx -y skills add charleswiltgen/axiom --skill axiom-xctrace-ref --agent claude-codeInstalls into .claude/skills of the current project.
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Files
SKILL.md
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Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
