# Checkout API Create and manage checkout baskets from any channel — web, mobile, call centre, or partner portal. Use the Checkout API to initiate new subscriptions, renewal checkouts, offer changes, cancellations, and payment method updates. Supports applying promo codes, previewing baskets before submission, and recovering abandoned carts for re-engagement campaigns. --- # Agent Instructions: 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: ``` GET https://docs.limio.com/api/checkout-api.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.