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Play Store in-app purchase server verification for one-time (managed) product
In this article, we’ll dive into how to verify one-time (managed) products on your server after an in-app purchase is completed on your Android app. We’ll use TypeScript on a Node.js server, but the logic can be adapted to any backend framework.
1. Add the service account key
Save the service account key with Android Publisher permission in your project folder. If you don’t know how to get this service account key, then read this article.
2. Store Product Information
Ensure that all product IDs set up on the Play Store, along with their associated prices, are saved in your database.
3. Setup the API
Create a POST API endpoint. For example: /iap/play_store/verify
4. Add Authorization
Implement authorization checks for this API to secure it. For simplicity, we will skip this step here.
5. Validate the Request
Ensure the request body contains the following parameters:
- packageName: The application ID of your Android app.
- productId: The ID of the product for which…
