Who it is forA mobile developer wiring a purchase or checkout flow who needs clear rules for push, sheet, and one-way screens.
The problemCheckout flows break when back navigation returns users into the paywall after they have paid, and navigation choices are often made by habit.
The outcomeA navigation map for the checkout flow that labels each screen as push, sheet, or one-way, plus the code for the transitions.
What you need first
- An MCP-capable agent such as Claude Code, Cursor, or Codex
- An Appllama account with Pro, since MCP access is part of Pro
- An Expo / React Native project and a simulator for the build loop
Steps
- Run
npx skills@latest add appllama/appllama-skills -a claude-code -a cursor -yfrom your project root to install for those agents. - Describe the checkout flow screen by screen, including where payment completes.
- Ask your agent to apply the appllama-app-design-skill navigation rules, including push versus replace, sheets, and one-way doors.
- Ask for the navigation code and confirm it removes back access to the paywall after payment.
- Run the simulator loop and scrub the purchase flow frame by frame to test back behavior.
Prompt for your agent
Using the appllama/appllama-skills repo, map the navigation for the <checkout flow name> in an Expo / React Native app, labeling each screen as push, sheet, or one-way. Output the navigation map and transition code, and verify in the simulator that the back action cannot return to the paywall after payment.
Caveat. The README describes these navigation rules as part of the design skill, so you still need an Expo / React Native project and a simulator to verify the behavior.
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