Axiom Build

This is a routing skill that figures out which specialized tool to invoke when your iOS build breaks, tests crash, or Xcode acts weird. It covers the full stack: environment issues (zombie processes, stale derived data), SPM conflicts, slow builds, TestFlight crashes, hangs, and code signing. The philosophy is sensible: check environment first before blaming your code, since 90% of mysterious failures are tooling problems. It connects to a bunch of other skills and autonomous agents like build-fixer and crash-analyzer. If you work on iOS and regularly lose 30 minutes to "it builds on my machine" nonsense, this gives you a decision tree to stop guessing.

skills.sh installs: 1.4K
GitHub stars: 1.3K
last updated: Aug 21, 2026

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Install

$ npx -y skills add charleswiltgen/axiom --skill axiom-build --agent claude-code

Installs into .claude/skills of the current project.

Files

Build & Environment

You MUST use this skill for ANY build, environment, or Xcode-related issue before debugging application code.

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-auditor agent", invoke the matching Codex skill instead — same procedure, no Claude Code agent required.

Available: axiom-modernize, axiom-scan-security-privacy.

The ones that shell out — builds, tests, simulators, crash symbolication — need shell access to run.