OSLTokenVerification

Secure your game's authentication with the OSL Token Verification System. Many social login plugins validate authentication only on the client side, which can expose your project to token spoofing risks. This package provides an ASP.NET Core Minimal API backend that performs secure server-to-server validation using official provider endpoints for Google, Facebook, Apple, and Steam.

The package is designed to remove backend complexity from your workflow. JWT handling, provider-side verification flows, and Unity client communication are already prepared, allowing you to integrate secure sign-in validation without building the entire backend stack from scratch.

Key Features

•Multi-provider token verification for Google, Facebook, Apple, and Steam

•Secure backend validation with audience and app identifier checks

•Unity-ready C# client manager using UnityWebRequest

•Included backend source code for local testing and production deployment

•Built-in Swagger endpoint for backend API testing

•Lightweight sample scene with runtime OnGUI test UI

•Setup documentation included in both Markdown and PDF formats