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 Xopoko/build-swift-apps --skill xcode-compile-profilergit clone --depth 1 https://github.com/Xopoko/build-swift-appsWrote 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/xopoko/build-swift-apps/xcode-compile-profiler)<a href="https://agentmods.dev/skills/xopoko/build-swift-apps/xcode-compile-profiler"><img src="https://agentmods.dev/badge/skills/xopoko/build-swift-apps/xcode-compile-profiler.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00040 | $0.00627 |
| Opus 5 | $0.00020 | $0.00313 |
| Sonnet 5 | $0.00008 | $0.00125 |
| Haiku 4.5 | $0.00004 | $0.00063 |
Grade A, and why
xcode-compile-profiler 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 4d 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.
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.
How it starts
The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Xcode Compile Profiler
Before invoking Apple-only binaries, confirm the execution context is macOS. From Windows or Linux, run those steps in a Mac SSH project or through an already configured remote transport; do not retry missing Apple binaries locally.
Bundled commands use $PLUGIN_ROOT for the plugin root. Use the host's plugin-root variable when defined; otherwise set it to the absolute path of this plugin before running a helper from the app repository.
Use when compile time, type checking, or mixed-language compilation is the bottleneck. Recommend first; do not edit source or build settings without explicit approval.
Rules
- Start from
.build-benchmark/artifacts or raw build timing output. - Prefer ad hoc diagnostic flags over persistent project edits.
- Rank by expected wall-clock impact, not cumulative parallel compiler work.
- If compile work is parallelized, label improvements as "Reduces compiler workload (parallel)" unless wait time should drop.
- Separate code-level, project-level, and module-level recommendations.
Inspect
- clean and incremental
Build Timing Summary - long
CompileSwiftSources, per-file compile tasks,SwiftEmitModule, andPlanning Swift module - mixed Swift/Objective-C boundaries, bridging headers, generated Swift-to-ObjC surfaces
- diagnostics:
-Xfrontend -warn-long-expression-type-checking=<ms>-Xfrontend -warn-long-function-bodies=<ms>-Xfrontend -debug-time-compilation-Xfrontend -debug-time-function-bodies-Xswiftc -driver-time-compilation-Xfrontend -stats-output-dir <path>
Preferred script:
python3 "$PLUGIN_ROOT/shared/build-optimization/scripts/diagnose_compilation.py" \
--project App.xcodeproj \
--scheme MyApp \
--configuration Debug \
--destination "platform=iOS Simulator,name=<latest available iPhone simulator>,OS=latest" \
--threshold 100 \
--output-dir .build-benchmark
Checks
Look first for missing explicit types in expensive expressions, deeply chained expressions, delegates typed as AnyObject, oversized bridging surfaces, unqualified header imports, non-final classes, broad public/open symbols, monolithic SwiftUI body, and closures without helpful type annotations.
What ships with it
2 files beside SKILL.md 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.
- 4d ago First seen · 60 lines · 40 tokens per session scan A 9a5ae9747d75
xcode-compile-profiler is a skill published in the GitHub repository Xopoko/build-swift-apps (45 stars, last pushed 10d ago), licensed MIT. It adds 40 tokens to every session and 627 once invoked, about $0.0002 per session on Opus 5. 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 2026-09-03.
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