Using APIs in Unreal Engine | VaRest Plugin Tutorial (JSON & Login System)
In this tutorial, we explore how to use APIs in Unreal Engine using the VaRest plugin.
You will learn how to install and enable the VaRest plugin, create a new Unreal Engine project, and connect your game to a backend server. We demonstrate how to fetch and parse JSON data from an API, including player information such as Name, Level, and Gold.
The lesson also includes a practical example of a simple login system, ending with displaying the player’s character name above the head in-game — a common feature in online and multiplayer games.
This tutorial is ideal for Unreal Engine developers who want to integrate backend services, REST APIs, and real-world systems into their projects.
Topics covered:
What is an API
Installing and enabling VaRest
API requests and JSON parsing
UI Widgets with server data
Simple login flow
Displaying player data in-game
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