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 mosif16/codex-Skills --skill build-iphone-appsgit clone --depth 1 https://github.com/mosif16/codex-SkillsWrote 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/mosif16/codex-skills/build-iphone-apps)<a href="https://agentmods.dev/skills/mosif16/codex-skills/build-iphone-apps"><img src="https://agentmods.dev/badge/skills/mosif16/codex-skills/build-iphone-apps.svg" alt="Measured on agentmods" 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 | $0.00052 | $0.01406 |
| Opus 5 | $0.00026 | $0.00703 |
| Sonnet 5 | $0.00010 | $0.00281 |
| Haiku 4.5 | $0.00005 | $0.00141 |
Grade A, and why
build-iphone-apps 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 7d 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
25 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.
- references/accessibility.md 9.7 KB
- references/app-architecture.md 11 KB
- references/app-icons.md 12 KB
- references/app-store.md 7.5 KB
- references/background-tasks.md 11 KB
- references/ci-cd.md 9.1 KB
- references/cli-observability.md 9.8 KB
- references/cli-workflow.md 7.9 KB
- references/data-persistence.md 12 KB
- references/navigation-patterns.md 11 KB
- references/networking.md 15 KB
- references/performance.md 11 KB
- references/polish-and-ux.md 15 KB
- references/project-scaffolding.md 10 KB
- references/push-notifications.md 13 KB
- references/security.md 14 KB
- references/storekit.md 15 KB
- references/swiftui-patterns.md 11 KB
- references/testing.md 11 KB
- workflows/add-feature.md 2.0 KB
- workflows/build-new-app.md 2.5 KB
- workflows/debug-app.md 2.9 KB
- workflows/optimize-performance.md 2.0 KB
- workflows/ship-app.md 2.8 KB
- workflows/write-tests.md 1.8 KB
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.
- 7d ago First seen · 160 lines · 52 tokens per session scan A 4d8b89d7f443
build-iphone-apps is a skill published in the GitHub repository mosif16/codex-Skills (18 stars, last pushed 9mo ago), with no licence file. It adds 52 tokens to every session and 1,406 once invoked, about $0.0003 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 2026-08-31.
Other skills, from other repositories
wear-compose-m3
Expert guidance for working with Wear OS Compose Material3. Use this skill when creating, updating, or migrating Wear OS projects. This includes the androidx.wear.compose.material3, androidx.wear.compose.foundation, and androidx.wear.compose.navigation3 libraries. Also working with core components such as AppScaffold…
kotlin-specialist
Provides idiomatic Kotlin implementation patterns including coroutine concurrency, Flow stream handling, multiplatform architecture, Compose UI construction, Ktor server setup, and type-safe DSL design. Use when building Kotlin applications requiring coroutines, multiplatform development, or Android with Compose.…
build-android-binary
Compile a PAM control's Android Kotlin module into the runtime-loadable DEX for a .ppmplugin. Creates a staged Gradle build with the pinned wrapper and react-android compile dependency, verifies manifest/module/package alignment and runtime-loading constraints, builds the release AAR, then runs d8 --min-api 24. Writes…
swiftui-dev
Use this skill for SwiftUI development, architecture, structure, performance, and Apple native app profiling. It combines.
android-navigation-3
Install and migrate to Jetpack Navigation 3. Use when implementing Navigation 3 patterns including NavDisplay, NavKey routes, deep links, multiple backstacks, scenes (dialogs, bottom sheets), or migrating from Navigation 2.
mobiai-kmp
Use when working on a Kotlin Multiplatform project — shared code, expect/actual declarations, platform-specific implementations, building and testing.