The eBay API SDK for Perl by Tim Keefer aims to simplify the programmatic interface into the eBay APIs. SDK classes include Trading API to authenticate access, Finding API to obtain eBay's next search options, Shopping API to access public eBay data, and Merchandising API to search available items on eBay considered popular among buyers. To configure the SDK information related to YAML and eBay credentials are available.
BIPS, Bitcoin payment system, allows users to buy or sell online using Bitcoin digital currency. In addition to Bitcoin transaction-based apps and an e-wallet, BIPS provides an API that users can integrate with existing workflows and tools. Merchants can utilize Bitcoin currency alongside traditional currency transactions.