zsmorgan21 | Stripe Developers | Page 1

Stripe.js is for mostly used for client-side interactions like payment method tokenization etc. It uses the publishable key which is exposed widely.

Plan/Price/Product objects are mainly used server-side allowing developers to customize their product catalogue the way they want. These interactions via server-side use the secret API key.

Opening up these objects to client-side SDK (which relies on publishable key) could open up some security concerns IMO.

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