iTWire Square opens APIs Payments provider Square has announced three new developer tools: Web Payments API, Loyalty API, and early access to the Snippets API for Square Online. Snippets API is the first Square Online API. lt enables developers to create plugins that help sellers create engaging online experiences. Social proof marketing platform Fomo used Snippets API to integrate with Square Online. "We help our users build trust and urgency with prospective shoppers by showing that other customers are engaging with the online store in real-time - just like the online equivalent to a busy store," said Fomo CEO Hideko Tachibana.