Show HN: Open-source demo of a wallet punch card that updates itself

Category: devtools

Tags: wallet-passes, api-demo, cloudflare-workers, loyalty-program

Score: 4.0/10 (Innovation: 4, Technical: 3, Documentation: 7, Utility: 2)

Punchline is an open-source demo showcasing Passmint, an API for creating and updating wallet passes for Apple Wallet and Google Wallet. It simulates a café loyalty punch card that updates itself on the user's phone after each coffee purchase. The project serves as a minimal, readable example of integrating Passmint into a serverless stack.

Target audience: backend developers

Repository: https://punchline.passmint.com/ · TypeScript · MIT

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