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.
npx skills add YanxReal/Xcode-MPC --skill xcode-buildgit clone --depth 1 https://github.com/YanxReal/Xcode-MPCWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/yanxreal/xcode-mpc/xcode-build)<a href="https://agentmods.dev/skills/yanxreal/xcode-mpc/xcode-build"><img src="https://agentmods.dev/badge/skills/yanxreal/xcode-mpc/xcode-build/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/yanxreal/xcode-mpc/xcode-build"><img src="https://agentmods.dev/badge/skills/yanxreal/xcode-mpc/xcode-build.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.00617 |
| Opus 5.5 | $0.00000 | $0.00247 |
| Sonnet 5.5 | $0.00000 | $0.00123 |
| Haiku 4.5 | $0.00000 | $0.00062 |
Grade C, and why
xcode-build scanned grade C with 1 finding 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 1mo ago.
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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
- `xcode_clean` — `clean` + optional `purgeDerivedData` (`rm -rf ~/Library/Developer/Xcode/DerivedData`) What it actually says
Xcode Build & Diagnostics
Focuses on compilation, diagnostics, lint and tests (8 tools: 6 build + 2 tests) from the 52-tool Xcode MCP.
Tools
xcode_build—xcodebuild build(scheme*,workspace,project,destination,configuration: Debug|Release)xcode_clean—clean+ optionalpurgeDerivedData(rm -rf ~/Library/Developer/Xcode/DerivedData)xcode_list_schemes—-list -jsonxcode_analyze—analyzexcode_archive_export—archive→-exportArchive(.ipa,exportOptionsPlist*)swift_format_lint—swift-format→swiftlintfallback (mode: lint|format,tool: auto|swift-format|swiftlint)xcode_run_tests—test(scheme*,destination*,onlyTesting,enableCodeCoverage)xcode_test_coverage—xcrun xccov view --report --json(autoDerivedData/*.xcresultviafindLatestXcresult)
When to Use
- User says “build MyApp”, “clean DerivedData”, “list schemes”, “archive IPA”, “lint Sources”, “run tests”, “coverage”.
Workflows
Clean Build:
xcode_clean {scheme:"MyApp", purgeDerivedData:true}
→ xcode_build {scheme:"MyApp", destination:"platform=iOS Simulator,name=iPhone 15", configuration:"Debug"}
Analyze + Lint:
xcode_analyze {scheme:"MyApp"}
→ swift_format_lint {path:"Sources/", mode:"lint"}
Test + Coverage:
xcode_run_tests {scheme:"MyApp", destination:"platform=iOS Simulator,name=iPhone 15", enableCodeCoverage:true}
→ xcode_test_coverage {}
Notes
- Always use
shellEscapefor paths with spaces (server does it). xcode_buildreturns fullstdout/stderrviaformatResult— show it.- If
swift-formatnot found, fallback toswiftlintautomatically.
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.
- 1mo ago First seen · 54 lines · 0 tokens per session scan C 2cf56ec1a629
xcode-build is a skill published in the GitHub repository YanxReal/Xcode-MPC (1 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 617 tokens. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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