Oso Modeler

Oso Modeler is a web-based tool that helps developers design and visualize authorization logic for their applications. It provides a structured environment to map out how different users and roles should access various resources within a system. The tool guides you through creating a clear model of your application's security requirements without needing to write code first.

The modeling process follows a logical four-step workflow: defining resources, setting permissions, configuring sharing rules, and customizing the logic. Each step builds upon the previous one, helping you create a comprehensive authorization diagram. The interface is visual and interactive, making it easier to understand complex relationships between users, roles, and resources before implementing the actual security code.

This tool is particularly valuable for developers and security engineers who need to plan access control systems for new applications or document existing authorization logic. It helps teams align on security requirements early in the development process and creates a clear blueprint that can be translated into actual policy code using Oso's authorization library.