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 agentmods add skills/daymade/claude-code-skills/developing-ios-appsnpx skills add daymade/claude-code-skills --skill developing-ios-appsgit clone --depth 1 https://github.com/daymade/claude-code-skillsWhat 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 | $0.00135 | $0.03347 |
| Opus 5 | $0.00068 | $0.01673 |
| Sonnet 5 | $0.00027 | $0.00669 |
| Haiku 4.5 | $0.00014 | $0.00335 |
Grade C, and why
developing-ios-apps 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 3d 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.
| Clean DerivedData | `rm -rf ~/Library/Developer/Xcode/DerivedData/PROJECT-*` | How it starts
The opening of the file, as written. The whole thing — 373 lines — stays where its author put it; the contents beside it link to each section on GitHub.
iOS App Development
Build, configure, and deploy iOS applications using XcodeGen and Swift Package Manager.
Critical Warnings
| Issue | Cause | Solution |
|---|---|---|
| "Library not loaded: @rpath/Framework" | XcodeGen doesn't auto-embed SPM dynamic frameworks | Build in Xcode GUI first (not xcodebuild). See Troubleshooting |
xcodegen generate loses signing |
Overwrites project settings | Configure in project.yml target settings, not global |
| Command-line signing fails | Free Apple ID limitation | Use Xcode GUI or paid developer account ($99/yr) |
| "Cannot be set when automaticallyAdjustsVideoMirroring is YES" | Setting isVideoMirrored without disabling automatic |
Set automaticallyAdjustsVideoMirroring = false first. See Camera |
| App signed as adhoc despite certificate | @electron/packager defaults continueOnError: true |
Set continueOnError: false in osxSign. See Code Signing |
| "Cannot use password credentials, API key credentials..." | Passing teamId to @electron/notarize with API key auth |
Remove teamId. notarytool infers team from API key. See Code Signing |
| EMFILE during signing (large embedded runtime) | @electron/osx-sign traverses all files in .app bundle |
Add ignore filter + ulimit -n 65536 in CI. See Code Signing |
Quick Reference
| Task | Command |
|---|---|
| Generate project | xcodegen generate |
| Build simulator | xcodebuild -destination 'platform=iOS Simulator,name=iPhone 17' build |
| Build device (paid account) | xcodebuild -destination 'platform=iOS,name=DEVICE' -allowProvisioningUpdates build |
| Clean DerivedData | rm -rf ~/Library/Developer/Xcode/DerivedData/PROJECT-* |
| Find device name | xcrun xctrace list devices |
XcodeGen Configuration
Minimal project.yml
name: AppName
options:
bundleIdPrefix: com.company
deploymentTarget:
iOS: "16.0"
settings:
base:
SWIFT_VERSION: "6.0"
packages:
SomePackage:
url: https://github.com/org/repo
from: "1.0.0"
targets:
AppName:
type: application
platform: iOS
sources:
- path: AppName
settings:
base:
INFOPLIST_FILE: AppName/Info.plist
PRODUCT_BUNDLE_IDENTIFIER: com.company.appname
CODE_SIGN_STYLE: Automatic
DEVELOPMENT_TEAM: TEAM_ID_HERE
dependencies:
- package: SomePackage
What ships with it
6 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.
- 3d ago First seen · 373 lines · 135 tokens per session scan C d31dcc6abf03
developing-ios-apps is a skill published in the GitHub repository daymade/claude-code-skills (1,367 stars, last pushed yesterday), licensed MIT. It adds 135 tokens to every session and 3,347 once invoked, about $0.0007 per session on Opus 5. 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 2026-08-30.
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