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Integrate payments into any web or mobile app. Sets up Stripe, LemonSqueezy, or Polar.sh for web; Superwall or RevenueCat for mobile. Covers products, webhooks, subscription portal, billing page, and a test-to-live checklist. Use when adding a paywall, subscription plan, or one-time purchase to an app.
Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.
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Systematic edge case discovery, test coverage, and hardening for any feature or codebase area. Spawns parallel subagents to enumerate edge cases across eight categories, writes tests for each, runs them, and fixes unhandled cases. Use after implementation to ensure robustness before shipping.
Add a time-boxed free trial to any app with a payment integration. Handles trial start, expiry tracking, gating, expiry emails, and the upgrade prompt flow. Use when adding a trial period to an existing subscription or paywall.
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Scaffolds a Better T Stack project via a structured interview. Uses AskUserQuestion to let the user pick frontend, backend, runtime, database, ORM, API layer, auth, payments, addons, example templates, and where to create the project. Assembles and runs the exact create-better-t-stack CLI command with no manual prompts.
| name | payments |
| description | Integrate payments into any web or mobile app. Sets up Stripe, LemonSqueezy, or Polar.sh for web; Superwall or RevenueCat for mobile. Covers products, webhooks, subscription portal, billing page, and a test-to-live checklist. Use when adding a paywall, subscription plan, or one-time purchase to an app. |
You are wiring up a complete payment integration. Work through each phase in order.
Billing model: {{args}}
Use AskUserQuestion for every question below — one call per question, not markdown. Ask questions one at a time and wait for each answer before proceeding.
Question 1: Platform (single select):
| Value | Description |
|---|---|
web | Web app |
mobile | Mobile app (iOS / Android) |
both | Both web and mobile |
Question 2a: Web payment provider (single select; skip if platform is mobile-only):
| Value | Description |
|---|---|
stripe | Stripe — direct card processing, full control, best ecosystem |
lemonsqueezy | LemonSqueezy — built-in VAT/tax handling, great for solo/EU |
polar | Polar.sh — open-source, OSS-friendly, built-in sponsorships & benefits |
Question 2b: Mobile payment provider (single select; skip if platform is web-only):
| Value | Description |
|---|---|
revenuecat | RevenueCat — abstracts App Store + Google Play; best cross-platform |
superwall | Superwall — dynamic paywalls without deploys; iOS-first |
Question 3: Products & billing — ask as free text:
Describe your plans/products (names, prices, billing intervals, trial periods, e.g. "Pro $9/mo with 7-day trial, Enterprise $49/mo").
Question 4: Gating & stack — ask as free text:
Which features are paywalled, and what is your framework / API layer / user model?
Confirm the product catalog and gating rules before proceeding.
Spawn 3 parallel subagents:
| Subagent | Focus |
|---|---|
| 1 | User model, auth flow, session handling |
| 2 | Existing API routes, middleware, webhook handling patterns |
| 3 | Frontend component patterns, routing, protected pages |
Synthesize: data model changes needed, API route plan, frontend gating strategy.
Define the full implementation surface based on provider:
customer_id, subscription_status, plan fields to user model
stripe_customer_idlemon_customer_idpolar_customer_idcheckout.session.completed, customer.subscription.updated, customer.subscription.deleted, invoice.payment_failedsubscription_created, subscription_updated, subscription_cancelled, subscription_payment_failedsubscription.created, subscription.updated, subscription.canceled, order.createdPresent the plan and confirm before implementing.
First, detect the package manager so $PM is set for whichever provider subsection you follow:
command -v bun >/dev/null 2>&1 && PM=bun || (command -v pnpm >/dev/null 2>&1 && PM=pnpm || PM=npm)
Shell note: This snippet assumes a POSIX shell. On Windows, run it via the Bash tool / Git Bash (PowerShell cannot run
command -v,>/dev/null 2>&1, or&&/||as written). PowerShell equivalent:$PM = if (Get-Command bun -ErrorAction SilentlyContinue) { "bun" } elseif (Get-Command pnpm -ErrorAction SilentlyContinue) { "pnpm" } else { "npm" }
$PM add stripestripe.webhooks.constructEvent200 fast; do async work after acknowledgingsubscription_status === 'active'$PM add @lemonsqueezy/lemonsqueezy.jscreateCheckout() with variant IDX-Signature header using HMAC-SHA256subscription_created / subscription_updated / subscription_cancelledlemon_customer_id and subscription_status on user$PM add @polar-sh/sdkpolar.checkouts.create({ products: ['<productId>'] })validateEvent() imported from @polar-sh/sdk/webhooks (throws WebhookVerificationError on a bad signature)subscription.created, subscription.updated, subscription.canceled, order.createdpolar_customer_id and subscription state on user$PM add react-native-purchases (or native pod/gradle)Purchases.configure({ apiKey }) on app launchPurchases.logIn(userId) after authPurchases.getOfferings() and display in paywall UIPurchases.purchasePackage(package)customerInfo.entitlements.active['pro'] to gate featuresnpx expo install expo-superwall (the current recommended SDK); for bare React Native use the legacy @superwall/react-native-superwallSuperwall.configure({ apiKey }) on app launchSuperwall.shared.identify(userId) after authSuperwall.shared.register('campaign_trigger') at paywall entry pointsSuperwallDelegate or subscription handler4242 4242 4242 42424000 0000 0000 0341) triggers correct statestripe listen --forward-to localhost:3000/webhooks/stripeorder.created and subscription.created webhooks fire correctlySuperwall.shared.debugMode = true)