Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
/plugin marketplace add AvdLee/Xcode-Build-Optimization-Agent-Skillnpx agentmods add plugins/avdlee/xcode-build-optimization-agent-skill/marketplacegit clone --depth 1 https://github.com/AvdLee/Xcode-Build-Optimization-Agent-SkillGrade A, and why
xcode-build-skills scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
{
"$schema": "https://raw.githubusercontent.com/anthropics/claude-code/refs/heads/main/marketplace/marketplace.schema.json",
"name": "xcode-build-skills",
"version": "1.0.1",
"owner": {
"name": "Antoine van der Lee",
"email": "[email protected]"
},
"metadata": {
"description": "Multi-skill Xcode build optimization plugin covering benchmarking, compile hotspots, project settings, SPM dependency analysis, and recommend-first orchestration."
},
"plugins": [
{
"name": "xcode-build-skills",
"description": "Six Xcode build optimization skills in one plugin: benchmark, compilation analysis, project analysis, SPM build analysis, a recommend-first orchestrator, and a fixer for applying approved changes.",
"repository": "https://github.com/AvdLee/Xcode-Build-Optimization-Agent-Skill",
"version": "1.0.1",
"author": {
"name": "Antoine van der Lee",
"email": "[email protected]"
},
"license": "MIT",
"category": "development",
"keywords": [
"xcode",
"builds",
"incremental-builds",
"clean-builds",
"swift",
"ios",
"macos",
"spm",
"benchmarking",
"compilation",
"project-settings",
"explicit-modules"
],
"tags": [
"xcode",
"build-optimization",
"swift",
"ios",
"spm",
"benchmarking",
"apple-platforms"
],
"source": "./"
}
]
}
What ships with it
1 file beside marketplace.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 51 lines scan A 5eb04b7bd551
xcode-build-skills is a plugin published in the GitHub repository AvdLee/Xcode-Build-Optimization-Agent-Skill (1,211 stars, last pushed 20d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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