Stacks has a RESTful API and a library called Stacks.js. Stacks.js is a set of libraries for Typescript clients “which provide everything you need to work with the Stacks blockchain.”
To develop a better understanding, I created a web client, a single page app (SPA), to test out the various capabilities exposed by Stacks.js and the RESTful API hosted in Github:
PUN is built using Vue 3 and Typescript.
The client uses the tools required to create a dApp. This includes a demo of Accounts, Authentication, Gaia, Cyphering and Contracts.