Google Wallet Instant Buy allows merchants to store and access customer payment data in the cloud. Both the Instant Buy for Android and Instant Buy for web versions offer in-app or online payments, access to Google single sign-on, and streamlines user experience by keeping data entry to a minimum. The APIs work with the merchants' current payment systems, and are available for use by end users in the U.S. who already have Google Wallet accounts.
Interested developers or merchants should contact Google at http://getinstantbuy.withgoogle.com/.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.