> For the complete documentation index, see [llms.txt](https://docs.onside.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.onside.io/sdk/purchasing.md). # Purchasing - [Making a Purchase](https://docs.onside.io/sdk/purchasing/making-a-purchase.md): Start a purchase by adding a payment to the queue, process the resulting transaction, and finish it. - [Restoring Purchases](https://docs.onside.io/sdk/purchasing/restoring-purchases.md): Let users restore their previous non-consumable and subscription purchases on a new device or after reinstalling. - [Handling Storefront & Price Changes](https://docs.onside.io/sdk/purchasing/storefront-price-changes.md): Approve or cancel a queued purchase when the storefront or price changes between enqueue and execution, using OnsidePaymentQueueDelegate. - [Managing Payment Methods](https://docs.onside.io/sdk/purchasing/payment-methods.md): Let users manage their saved payment methods (bank cards) with OnsideKit's built-in payment methods manager screen. - [Apple Pay](https://docs.onside.io/sdk/purchasing/apple-pay.md): Set up Apple Pay in OnsideKit using a Merchant ID, an Apple-generated certificate, and your app's Apple Pay capability. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.onside.io/sdk/purchasing.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.