Styx is where everything converges: every repo you work in, the AI coding agents building in them, and every login they need to ship. Switch between all of it from one window. And like the river it's named after, nothing crosses over without you. Deploying, or touching live data, asks you first.
Free and open source under Apache-2.0. Read the code on GitHub.
An agentic development environment (ADE) for Mac, with Windows and Linux in beta. Your keys never leave your computer.
Codex tries to push a change to the live database. Styx catches it before it goes anywhere.
All your repos in one window, each with its own agents, branches and services. A glance shows what needs you; one keystroke takes you there. No more hunting through windows and terminals.
Claude Code, Codex, Gemini CLI, Cursor and OpenCode, side by side, each on its own copy of your code. Read what they did, change by change, keep what you like, or open it in your own editor with one key.
Log into Vercel, Supabase, AWS, Google Cloud, Fly.io, Railway, Render, GitHub and your servers once, in one place. Agents never hold the keys. They borrow access, for an hour, with your fingerprint for anything live. Every borrow is written down.
Agents build freely on your side of the river. To deploy, or touch live data, they have to cross, and nothing crosses without you. It asks, you decide, it gets a temporary pass, and the record keeps the receipt.
Say it runs a deploy, or wants to change your live database. Styx catches the request before it goes anywhere. The agent never sees a password or a key, so there is nothing for it to leak or misuse.
The agent pauses. You see the request wherever you happen to be: in its chat, on the board, in your inbox, as a notification, as a badge on the dock. Answer in any one place and it’s answered everywhere.
Just read, or also write? This once, for an hour, or until the agent is done? Anything that touches production asks for your fingerprint or face before it goes through.
It works only for what you allowed, only for that agent, and only for as long as you said. When the time is up, or the agent finishes, or you change your mind, the pass is gone. Nothing permanent is ever handed over.
Who asked, what they got, for how long, and what they did with it. The record can’t be edited or deleted, by anyone, ever. Taking a pass away adds a line; it never removes one.
Styx runs the agents you have installed and signs them in for you, connects to the services you are already logged into, and picks up your editor on first launch: recent folders come along, and anything can be opened back in it with one key. Nothing in your editor changes.
Every agent works on its own copy of your project, on its own branch. You keep working on yours. When something clashes, the agent stops and tells you exactly where.
| Branch | Who | Changes | Pull request | Action |
|---|---|---|---|---|
| main | you | — | — | |
| fix/checkout | Claude | +142 −38 · 3 files | #214 open | Review |
| test/flaky | Codex | +12 −4 · 2 files | — | Open |
| docs/readme | Gemini | conflict README.md | — | Resolve |
Agents can draw your screens before they write code, and fix what you point at once it runs. Nothing to describe in a paragraph: click it.
Start as many tasks as you like, each with its own agent on its own branch. The Tasks tab shows each one as a card: what it is doing, whether it needs you, and what it changed. Click a card to open its chat.
A design task draws your screens first, as wireframes or finished designs, at desktop, tablet and phone size, in your own type and colours. Every size sits side by side on one canvas.
Preview runs your app beside the chat. When something looks off, press Select to fix, click it or drag over an area, and say what is wrong. The agent gets the element, where it lives in your code when the page says, and a picture.
Once an agent is done, everything else happens in the same window too. Anything that reaches production still asks you first.
No repo yet? Create one, private by default, or link one you already have. Publish then commits, pushes and opens the pull request in one step, with the message drafted by your agent from the changes.
Each place you deploy to runs the command you’d type: vercel, gcloud, a script over ssh. You don’t have to know it. On the first deploy an agent works it out, and Styx remembers.
Tech debt audit has an agent read your project the way a new engineer would, and report what will actually trip someone up. It runs in the background and changes nothing.
Type your next message while an agent is busy. It waits for the current turn to finish, or Codex takes it straight away.
Every turn an agent takes is saved. If one goes wrong, put the project back to how it was before it, in one click.
Install a skill once and choose which agents get it: Claude Code, Codex, Gemini CLI, Cursor, or all of them.
Also in the app: a usage view that shows how close each agent is to its limit, and an agent dock that keeps every chat above your other windows.
An oath sworn on the Styx could not be broken, even by a god. These are ours, built into the software rather than written in a policy.
Keys live in your system’s keychain (the Mac Keychain, Windows Credential Manager or the Secret Service keyring on Linux), nowhere else. Not in a file, not in a log, not in the app’s own database.
Deploying, or changing live data, asks for Touch ID, Windows Hello or your system password first. Every time.
Every pass is temporary and covers only what you approved. When it runs out, the agent is back to asking.
Every request and approval is logged in a way that cannot be edited or deleted. Taking a pass away adds a line.
Your code, your projects, your prompts and your keys stay on your computer, and your agents talk to your services directly. Styx’s own server knows your account and, unless you switch it off, how often a handful of features get used. Never what you used them on.
Everything has a key. The command bar is where you start when you don't know which one.
Version 0.4.14, free and open source. For Mac, with Windows and Linux in beta.
Styx works with the agents already installed on your computer, and can install the ones you're missing. Installing Styx covers each platform, including what Linux needs.
Styx is free and open source under the Apache License 2.0. Read how it works, build it yourself, or help it reach more agents and more places to deploy.
Questions, ideas and things you built go in GitHub Discussions. Bugs go in issues.
