A command-line guide for building native macOS projects with Xcode’s build tool, xcodebuild. It covers both Xcode projects and workspaces, including projects with package or CocoaPods dependencies.

Use it to locate a macOS project, list its build schemes, run a Debug build, and review build errors.

It gives you a repeatable way to compile an app and identify whether the build succeeded or which errors need attention. This is useful when you want to check changes without opening Xcode.

How phun333/pi-infobar configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to phun333/pi-infobar. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/phun333/pi-infobar/main/.agents/skills/macos-build/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/phun333/pi-infobar

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/phun333/pi-infobar/macos-build/github.svg)](https://agentmods.dev/skills/phun333/pi-infobar/macos-build)

Your own site

<a href="https://agentmods.dev/skills/phun333/pi-infobar/macos-build"><img src="https://agentmods.dev/badge/skills/phun333/pi-infobar/macos-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/phun333/pi-infobar/macos-build"><img src="https://agentmods.dev/badge/skills/phun333/pi-infobar/macos-build.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 753 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original No closer match found 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.

Model	Per session	Once invoked
Fable 5.1	$0.00095	$0.00753
Opus 5.5	$0.00038	$0.00301
Sonnet 5.5	$0.00019	$0.00151
Haiku 4.5	$0.00010	$0.00075

Measured 2mo ago against content hash 21df9b33ed00, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

macos-build 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 2mo 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

macos-build — 100% identical, 0 lines differ

.agents/skills/macos-build/SKILL.md · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Build macOS App

Build any native macOS Xcode project from the command line using xcodebuild.

Finding the Project

Before building, locate the Xcode project or workspace:

find . -maxdepth 2 -name "*.xcodeproj" -o -name "*.xcworkspace" | head -5

Then list available schemes:

xcodebuild -list -project "YourApp.xcodeproj" 2>/dev/null | grep -A 20 "Schemes:"

Build Command

Use this command template, replacing the project path and scheme:

DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer xcodebuild build \
  -project "YourApp.xcodeproj" \
  -scheme "YourApp" \
  -configuration Debug \
  -destination "platform=macOS" \
  2>&1 | grep -E "(BUILD SUCCEEDED|BUILD FAILED|error:)" | head -20

For workspaces (projects with SPM dependencies or CocoaPods):

DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer xcodebuild build \
  -workspace "YourApp.xcworkspace" \
  -scheme "YourApp" \
  -configuration Debug \
  -destination "platform=macOS" \
  2>&1 | grep -E "(BUILD SUCCEEDED|BUILD FAILED|error:)" | head -20

Interpreting Results

BUILD SUCCEEDED -- the build passed, report success to the user.
BUILD FAILED with error: lines -- read each error, identify the source file and line, and help the user fix them. After fixing, re-run the build to verify.
If the output is empty or unclear, re-run without the grep filter to get full output for diagnosis.

When to Build

After making code changes, if the user asks to verify they compile
When the user explicitly says "build", "compile", or "check if it builds"
After fixing build errors, to confirm the fix worked

Xcode Beta Toolchains

If the project targets a beta SDK (e.g., macOS 26 Tahoe), you may need to point to the beta Xcode:

DEVELOPER_DIR=/Applications/Xcode-beta.app/Contents/Developer xcodebuild build ...

Check which Xcode is available:

ls /Applications/ | grep -i xcode

Common Build Failures

Error	Fix
`no such module 'Sparkle'`	SPM dependency not resolved. Try `xcodebuild -resolvePackageDependencies` first
`no signing identity found`	Set `CODE_SIGN_IDENTITY=""` and `CODE_SIGNING_ALLOWED=NO` for command-line builds
`SDK "macosx" cannot be located`	Wrong `DEVELOPER_DIR`. Check Xcode installation path
`scheme not found`	Run `xcodebuild -list` to see available schemes

Read the full file on GitHub · 87 lines

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.

2mo ago First seen · 87 lines · 95 tokens per session scan A 21df9b33ed00

Subscribe to this mod's changes

macos-build is a skill published in the GitHub repository phun333/pi-infobar (97 stars, last pushed 4mo ago), licensed MIT. It adds 95 tokens to every session and 753 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-08-30.

Mobile ai-agents analytics-dashboard developer-tools macos menu-bar menubar-app

macos-build next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
macos-buildphun333/pi-infobar	Skill	97	4mo ago	MIT	A	95	Claude Code, Codex
app-store-reviewjacklandrin/OnlySwitch	Skill	6.0k	yesterday	MIT	A	76	Claude Code, Codex
swift-concurrency-projacklandrin/OnlySwitch	Skill	6.0k	yesterday	MIT	A	35	Codex
swiftui-projacklandrin/OnlySwitch	Skill	6.0k	yesterday	MIT	A	36	Codex
swift-testing-projacklandrin/OnlySwitch	Skill	6.0k	yesterday	MIT	A	34	Codex
onlyswitch-deeplinkjacklandrin/OnlySwitch	Skill	6.0k	yesterday	MIT	A	85	Claude Code, Codex
boutique-storemergesort/Boutique	Skill	1.1k	5d ago	MIT	A	52	Claude Code

pi-infobar: Skill for Claude Code