Developer Guide
Build software applications from .fractal models and understand the Fractal OSI codebase architecture.
This section is for software engineers, AI engineers, and technical contributors who want to build on top of Fractal OSI models or understand the platform's internal architecture.
What You'll Find Here
| Section | What It Covers |
|---|---|
| Introduction | What you can build from a .fractal file; FML type-to-software-pattern mapping |
| Integration Guides | Reading .fractal files; generating TypeScript, APIs, and database schemas; AI code generation with Claude and Copilot |
| Architecture | Three-layer data model; Pinia store design; Vue Flow canvas engine; serialization and persistence; testing conventions |
| Reference | Complete .fractal JSON schema; store API quick reference |
Prerequisites
Before diving in, familiarity with the Fractal Modeling Language (FML) and the .fractal file format will help you make sense of the type system and data structures described throughout this guide.

