Early access, free today

Hold the reins on your AI coding agents.

When an agent stalls or asks to run something, your phone buzzes. Read what it wants, check the diff, approve it or tell it to do something else. It all runs on your own machine.

Free · Self-hosted · Cross-vendor: native Claude Code, Codex & Gemini — others via live panes

Built with DevReins

You find out the moment an agent needs you

DevReins runs on your dev machine and talks to your phone over an encrypted connection. When an agent stalls or hits a permission prompt, your phone gets pinged instead of you finding out in the morning.

Agent working
Claude Code running on your machine
Agent stalls
Needs input, hits a permission
Your phone lights up
A push to your phone
You approve
One tap from anywhere
Agent resumes
Picks up exactly where it stopped

The intervention loop — live

The agent below is simulated, but the flow and panels are the real product — agents, files, git, and a terminal on your machine. In a few seconds it will ask permission to run a command: one tap to approve, redirect, or stop, with full transcript context. Works natively with Claude Code, Codex, and Gemini — and drives Cursor, Aider, or any terminal agent through live session panes. Nothing to install.

Open the full-screen demo →

…and the cockpit, on your desktop

Back at the keyboard, every agent tiles side by side in one window. Same loop — an agent below is about to need you.

Open the full-screen cockpit demo →

Why I built this

I'm a robotics software engineer. Most of my side projects are written by agents that run while I'm doing something else, and DevReins exists because of one recurring, annoying problem.

I work full-time in robotics and run several products on the side — a civic-tech platform, a compliance tool, trading experiments. Nearly all of that code is written by agents that run while I'm at work or asleep. And the same thing kept happening: an agent would hit a permission prompt at 11pm, sit there waiting for a yes, and I'd find it the next morning. A whole night of progress lost to a question I could have answered in five seconds. So I built the thing that buzzes my phone, shows me exactly what the agent wants, and lets me answer it from bed, the gym, or the grocery line. I've been running it every day since.

ER
Eric Rosenfeld Robotics Software Engineer · AI developer since 2018 · Founder, ChangeUs & Clausi

Free while it's early

There's no card to enter and nothing to buy yet. I want people using it hard and telling me what breaks. Paid tiers come later, and only for the hosted parts: the relay, push at scale, and the iOS app.

Free (early access)
$0
Windows 11 + WSL2 today; Mac/Linux in v1.1
  • The full cockpit: Agents, Files, Git, Open URL, Terminals, Desktop, Review
  • Native Claude Code, Codex & Gemini; Cursor, Aider & any terminal agent via live panes
  • Unlimited agents and sessions
  • Log in on your phone, pick your machine — no tunnel or network setup
  • Edit an agent's Claude Code skills & MCP tools from your phone — applied on its next run
  • Self-hosted: your code never touches our servers
  • Runs in plain sight on your box; source-available release planned

Common questions

Which AI coding agents does DevReins work with?

Claude Code, OpenAI Codex, Cursor CLI, Gemini CLI, and Aider — and any agent that runs in a terminal on your machine. DevReins watches the sessions themselves, so it isn't tied to one vendor.

Does my code ever leave my machine?

No. DevReins is self-hosted: the server runs on your dev box and traffic to your phone is end-to-end encrypted. The relay only forwards ciphertext — it can't read your code, terminal output, or conversations.

Do I need to set up a tunnel, VPN, or port forwarding?

No. Your machine connects outbound to the relay, so it works behind NAT and firewalls with zero network configuration. Install the app, run the server, log in, and pick your machine.

Is DevReins a remote desktop app?

No. Remote desktop gives you a tiny screen and a mouse. DevReins is built around your agents: it notifies you the moment one stalls or needs approval and lands you on the exact blocking context — then gives you files, git, and a terminal to act.

Does it work on iPhone?

Yes — log in from Safari and add DevReins to your home screen; it runs as a full-screen web app. A native iOS app ships with Pro.

How much does DevReins cost?

Free during early access — no credit card, no trial timer. Pro ($19/mo: managed relay, push notifications, native iOS app) opens in v1.1.

Drop your email

One email when Pro opens. Maybe one before that if something big ships. That's it.

Your email is used only to send the launch notification and onboarding sequence. See our privacy policy.