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 Abdullah4AI/apple-developer-toolkit --skill paywallgit clone --depth 1 https://github.com/Abdullah4AI/apple-developer-toolkitWrote 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/abdullah4ai/apple-developer-toolkit/paywall)<a href="https://agentmods.dev/skills/abdullah4ai/apple-developer-toolkit/paywall"><img src="https://agentmods.dev/badge/skills/abdullah4ai/apple-developer-toolkit/paywall.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 | $0.00026 | $0.01713 |
| Opus 5 | $0.00013 | $0.00856 |
| Sonnet 5 | $0.00005 | $0.00343 |
| Haiku 4.5 | $0.00003 | $0.00171 |
Grade A, and why
paywall scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 211 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Custom Paywall
Build custom paywalls matching the app's design system. DO NOT use RevenueCat's built-in PaywallView — always build custom UI.
BANNED Patterns
Do NOT create:
SubscriptionPlan/SubscriptionTier/Planenum or struct with hardcoded prices- Models with
var price: Stringreturning "$X.XX" - ViewModels holding
[SubscriptionPlan]— hold[Package]from RevenueCat instead - Any fallback or sample data with price strings
PaywallViewModelor any ViewModel that callsPurchases.shared— PaywallView usesSubscriptionManager.shareddirectly.sheetfor paywall presentation — MUST use.fullScreenCover- Hardcoded savings percentages ("Save ~17%") — must be calculated from StoreKit prices
Data Source: RevenueCat Package Objects
The PaywallView gets its data from SubscriptionManager.packages which holds RevenueCat Package objects. ALL pricing comes from package.storeProduct.localizedPriceString. ALL plan names come from package.storeProduct.localizedTitle.
PaywallView Pattern (REQUIRED)
struct PaywallView: View {
@Environment(\.dismiss) private var dismiss
@State private var manager = SubscriptionManager.shared
var body: some View {
ZStack {
ScrollView {
VStack(spacing: AppTheme.Spacing.lg) {
closeButton
heroSection
planCards
ctaButton
footer
}
.padding(AppTheme.Spacing.md)
}
if manager.purchaseSuccess {
purchaseSuccessOverlay
}
}
.task { await manager.loadOfferings() }
.onChange(of: manager.purchaseSuccess) { _, success in
if success {
Task {
try? await Task.sleep(for: .seconds(1.5))
manager.resetPurchaseSuccess()
dismiss()
}
}
}
}
private var planCards: some View {
VStack(spacing: AppTheme.Spacing.sm) {
ForEach(manager.packages, id: \.identifier) { package in
PaywallPlanCard(
package: package,
isSelected: manager.selectedPackage?.identifier == package.identifier,
onTap: { manager.selectedPackage = package }
)
}
}
}
private var ctaButton: some View {
Button {
guard let pkg = manager.selectedPackage else { return }
Task { await manager.purchase(pkg) }
} label: {
Text("Subscribe")
.font(AppTheme.Fonts.headline)
}
.buttonStyle(.borderedProminent)
.disabled(manager.selectedPackage == nil || manager.isLoading)
}
}
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.
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 · 211 lines · 26 tokens per session scan A bb7efe42118f
paywall is a skill published in the GitHub repository Abdullah4AI/apple-developer-toolkit (10 stars, last pushed yesterday), licensed MIT. It adds 26 tokens to every session and 1,713 once invoked, about $0.0001 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.
Other skills, from other repositories
play-billing-library-version-upgrade
Use this skill when upgrading or migrating an Android project from any legacy Google Play Billing Library (PBL) version to the latest stable version of PBL.
asc-revenuecat-catalog-sync
Reconcile App Store Connect subscriptions and in-app purchases with RevenueCat products, entitlements, offerings, and packages using asc and RevenueCat MCP. Use when setting up or syncing subscription catalogs across ASC and RevenueCat.
axiom-implement-iap
Use when the user wants to add in-app purchases, implement StoreKit 2, or set up subscriptions.
google-play
Google Play Developer API (Android Publisher) integration with managed OAuth. Manage apps, subscriptions, in-app purchases, and reviews. Use this skill when users want to interact with Google Play Console programmatically. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).
subscription-lifecycle
Generates StoreKit 2 subscription lifecycle management — grace periods, billing retry, offer codes, win-back offers, upgrade/downgrade paths, and subscription status monitoring. Use when user needs post-purchase subscription state handling beyond the initial paywall.
subscription-offers
Generates StoreKit 2 code for all subscription offer types — introductory, promotional, offer codes, and win-back. Includes eligibility checks, offer presentation, and the preferredSubscriptionOffer modifier. Use when adding subscription offers, free trials, or promotional pricing.