xcode-compilation-analyzer

xcode-compilation-analyzer is a skill for Claude Code, Codex from omarshahine/HomeClaw. It costs 74 tokens per session (1,080 once invoked), scanned A, a copy of xcode-compilation-analyzer, MIT.

A method for finding slow Swift and mixed-language compilation using Xcode build timing reports and Swift compiler diagnostics. It produces a ranked plan for source-level changes without editing the project during the investigation.

In plain words
What is it for?
Use it to investigate slow clean or incremental builds, expensive type checking, long Swift compilation tasks, or slow module generation, then prepare recommendations for approval.
Why use it?
It separates compiler workload from actual wall-clock waiting time, which matters when many files compile at once. Evidence-based ranking helps focus on bottlenecks that are most likely to shorten builds.

Skill for Claude CodeCodex

Part of the homeclaw plugin — 17 skills, 4 commands shipped together

Install

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.

agentmods
npx agentmods add skills/omarshahine/homeclaw/xcode-compilation-analyzer
Any agent
npx skills add omarshahine/HomeClaw --skill xcode-compilation-analyzer
Clone the repo
git clone --depth 1 https://github.com/omarshahine/HomeClaw

Made for: Claude Code, Codex.

Or install homeclaw, the plugin that ships this one along with the rest of its 17 skills, 4 commands.

Wrote 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.

agentmods badge for xcode-compilation-analyzer

README.md
[![agentmods](https://agentmods.dev/badge/skills/omarshahine/homeclaw/xcode-compilation-analyzer.svg)](https://agentmods.dev/skills/omarshahine/homeclaw/xcode-compilation-analyzer)
Your own site
<a href="https://agentmods.dev/skills/omarshahine/homeclaw/xcode-compilation-analyzer"><img src="https://agentmods.dev/badge/skills/omarshahine/homeclaw/xcode-compilation-analyzer.svg" alt="Measured on agentmods" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,080 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00074 $0.01080
Opus 5 $0.00037 $0.00540
Sonnet 5 $0.00015 $0.00216
Haiku 4.5 $0.00007 $0.00108

Measured 4d ago against content hash c49d8bf206d6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

xcode-compilation-analyzer 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.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/diagnose_compilation.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

This is a copy

100% identical to xcode-compilation-analyzer — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/xcode-compilation-analyzer/SKILL.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Xcode Compilation Analyzer

Use this skill when compile time, not just general project configuration, looks like the bottleneck.

Core Rules

  • Start from evidence, ideally a recent .build-benchmark/ artifact or raw timing-summary output.
  • Prefer analysis-only compiler flags over persistent project edits during investigation.
  • Rank findings by expected wall-clock impact, not cumulative compile-time impact. When compile tasks are heavily parallelized (sum of compile categories >> wall-clock median), note that fixing individual hotspots may improve parallel efficiency without reducing build wait time.
  • When the evidence points to parallelized work rather than serial bottlenecks, label recommendations as "Reduces compiler workload (parallel)" rather than "Reduces build time."
  • Do not edit source or build settings without explicit developer approval.

What To Inspect

  • Build Timing Summary output from clean and incremental builds
  • long-running CompileSwiftSources or per-file compilation tasks
  • SwiftEmitModule time -- can reach 60s+ after a single-line change in large modules; if it dominates incremental builds, the module is likely too large or macro-heavy
  • Planning Swift module time -- if this category is disproportionately large in incremental builds (up to 30s per module), it signals unexpected input invalidation or macro-related rebuild cascading
  • ad hoc runs with:
    • -Xfrontend -warn-long-expression-type-checking=<ms>
    • -Xfrontend -warn-long-function-bodies=<ms>
  • deeper diagnostic flags for thorough investigation:
    • -Xfrontend -debug-time-compilation -- per-file compile times to rank the slowest files
    • -Xfrontend -debug-time-function-bodies -- per-function compile times (unfiltered, complements the threshold-based warning flags)
    • -Xswiftc -driver-time-compilation -- driver-level timing to isolate driver overhead
    • -Xfrontend -stats-output-dir <path> -- detailed compiler statistics (JSON) per compilation unit for root-cause analysis
  • mixed Swift and Objective-C surfaces that increase bridging work

Read the full file on GitHub · 90 lines

Files

What ships with it

4 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.

Changes

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.

  1. 4d ago First seen · 90 lines · 74 tokens per session scan A c49d8bf206d6

Subscribe to this mod's changes

xcode-compilation-analyzer is a skill published in the GitHub repository omarshahine/HomeClaw (164 stars, last pushed 2d ago), licensed MIT. It adds 74 tokens to every session and 1,080 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to xcode-compilation-analyzer, differing in 0 lines, and is treated as a copy.

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