Meet Legit SDK
🧪 Legit SDK Alpha Docs (Preview)
It’s part of our ongoing RFC process, where we share experimental features and API concepts with developers before the official release.
We’d love your feedback as we refine the SDK — join the discussion on Discord .
The easiest way to build fail-safe applications.
Legit SDK is built around two core ideas: fail-safe by design, and effortlessly simple to use.
Fail-safe means giving your users the same superpowers you know from Git:
- Roll back to any previous state
- Branch off to run experiments safely
- Merge changes back when you’re happy with the result
And it’s easy because you interact through the simplest interface imaginable: the file system API. Yep, the same one you learned in your first semesters of computer science.
Runs everywhere. Use Legit SDK as an API in the browser, or mount it as a folder on your machine. That means instant compatibility with the stack of your choice — Python, Java, Node.js… you name it — from day one.
Where to get started?
- Get started — How to setup Legit SDK?
- API — All about our Filesystem API
- Example — A versioned document
Read more about concepts and AI use case here:
- Page 1: The Problem - Why do we build this?
- Page 2: The Idea — Why Git’s core principles are the missing foundation for AI
- Page 3: The Filesystem API — How files become the universal, versioned interface
- Page 4: The Chat App — A real example: AI writes, users stay in control
- Page 5: Flipping the Model — Bringing local-first, Git-powered sync to the browser
Welcome to the Legit Developer Docs
These docs are not just a manual. They’re an open workspace where developers can explore, test and share feedback on the SDK.
Why This Documentation Exists
We’re sharing early because infrastructure like this only gets better when shaped by real developer input. Here’s what you’ll find:
- Early API sketches
- Concepts that may still change
- Missing sections that are coming soon
This is intentional. We want to understand what feels clear, what feels confusing and what could be improved.
Feedback
If you are testing the SDK and something feels off, unclear or incomplete we would love to hear from you. We especially care about:
- API design
- Naming
- Developer experience
What’s Next
The core idea is already usable:
Read and write files. Legit handles history, sync and collaboration automatically.
More guides, deep dives and references are coming soon.