Open a co-work, share a code, and every Claude, Codex or Cursor session on every laptop knows what the others are doing. No conflicts, no overwritten work, one timeline.
Free for two people · Linux and Windows coming soonChain runs quietly on each Mac. Agents keep running where they already run, with their owner's keys. Only the coordination is shared.
Pick a folder, get a code. Teammates type it and have the project, the board and the rules in under a minute.
TIDE-4821Every session reads who is working on what before it touches a file, and claims what it's about to change.
An agent that reaches for a claimed file is blocked and told who has it and why. Instructions are nice; hooks are law.
Each agent works in its own worktree. Finished work merges itself when tests are green. Conflicts pause and ask a human.
Come back in the morning and read exactly what four agents did overnight, in order, with diffs.
Only claims, tasks and log lines go through the relay. Code moves between Macs through your own git remote.
Choose a folder. Chain makes it a repo if it isn't one and creates a shareable code.
They paste the code on their own Mac. The project clones, the board syncs, nobody shares a key.
One button opens Claude Code, Codex or Cursor in a private worktree with coordination already wired in.
No forks, no custom models. Chain talks to agents through the hooks and tool protocols they already support.
The relay carries claims, tasks and log lines. That's it. Code moves between Macs through your own GitHub or git remote, API keys stay in your Keychain, and the terminal output stays on your screen.
Free for you and a friend. Pay when the whole team is in it.
Prices in EUR. Team includes a 14-day trial.
Download Chain and invite one teammate. You'll see the difference on the first merge.
Download for Mac