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A crew of coding agents,
on all your Macs.
byre runs Claude Code, Codex and Antigravity side by side on one Mac, each on its own branch and worktree, with a lead agent that watches them all and tells you what needs you. Pick up from whichever Mac you're at.
Download for macOSWhat it does
One server, every Mac
The agents run on one Mac that stays on, such as a Mac mini in a closet. Open byre on your laptop, your desk Mac, or all of them at once: each shows the same tasks, questions and transcripts live. Close the laptop and the agents keep working.
- In sync to the second Answer a question on the laptop and it's gone from the iMac before you turn around.
- Clock out, they don't The crew lives on the server, so go home and come back to finished work.
- From anywhere byre talks over Tailscale, so the closet Mac is one click from the coffee shop.
Every server, every project
One server or five, every project shows up in one window, color-coded, on every Mac on your iCloud account.
- New Mac, no setup Your servers are waiting on first launch, with nothing to type in.
- Hop between them A picker or a shortcut flips servers and projects without opening another window.
- Know where you are Each server wears its own color, so a glance tells you which one you're on.
Tasks
Start one for every idea. Each gets its own branch and worktree, so ten agents never step on each other, and you can chime in while it works.
- Any agent you like Claude Code, Codex or Antigravity, with the model picked per task.
- Interrupt politely Send a note mid-turn and the agent folds it in without starting over.
- Shell included Open terminals in the task's worktree, and save the commands you run often.
Lead agent
One agent watches every task, points you at what needs you, and starts, merges or discards tasks when you ask.
- The short version Ask what happened while you were out and get it task by task, in a few lines.
- Learns how you work It keeps notes on your preferences and steers every agent by them.
- Just say it "Merge website and start a dark-mode task" is a whole request, not a to-do list.
Questions, not interruptions
When an agent needs a decision, it lays out the options and recommends one. A notification brings you straight to it; pick an answer and the agent carries on. Every option says what you get and what you give up, so the call takes seconds.
- Seconds, not meetings The trade-offs are spelled out, so you can decide between sips of coffee.
- Opinionated The agent marks the option it would take, so agreeing is a single click.
- Wherever you are The notification finds you on whichever Mac you're using.
Room to focus
Two panes, side by side: your lead on the left, one task on the right. No sidebars, no toolbars, no maze of panels. Diffs, files and terminals slide in when you ask for them and slide away when you're done.
- Nothing to arrange No panels to drag or resize: the same layout on a laptop and a 6K display.
- Peek, then back Pull up a diff over the lead, take a look, and click the strip beside it to put it away.
- ⌘K to anywhere Type a few letters to jump to any task in any project.
See what they built
Mockups, previews, PDFs and images open right next to the conversation, in tabs you can flip between.
- No browser shuffle Nothing lands in a stray browser window; it stays with the task that made it.
- Pick a favorite Ask for three takes on a design and choose with all of them in front of you.
- Still there later The Page tab keeps the last page one click away.
Step away, they keep going
Flip on Away and agents stop waiting on you: each one makes its best call and keeps working. Back at your desk? Answer any question they asked, and byre forks the task from that moment with your answer.
- Lunch, not a standstill Come back to an hour of progress instead of a pile of questions.
- Second thoughts welcome If you'd have chosen differently, the fork picks up from exactly where the agent chose.
- No guessing on secrets Passwords, permissions and test results still wait for you.
Snapshots and forks
Step through a task's snapshots, diff any of them, and fork a new task from any one, conversation included.
- Nothing lost Every turn that changes files leaves a snapshot, so no step is ever overwritten.
- Compare anything Line a snapshot up against the one before it, or against the default branch.
- What if? Curious how another approach would have gone? Branch off an earlier point and try it.
Reviews
Every change gets a second opinion. Reviewers check each turn's work; the agent fixes what holds up, explains what it skips, and you can overrule it with a click.
- Mix your models Have Codex check Claude Code's work, or the other way around.
- Argued, not obeyed The agent pushes back on findings it thinks are wrong, and shows its reasoning.
- You break ties Side with the reviewer and the fix is underway.
One-click merge
Click Merge and you're done: the agent sorts out any conflicts, and the whole task lands as one clean commit.
- History you can read Five turns of back-and-forth become a single change with a real title.
- Land it and keep going Merge the work so far and carry on in the same task.
- A short list Merged tasks close themselves, so only live work stays in view.
Teams and workflows
Big jobs get split up. An agent hands pieces to helpers, or a team builds one change together. Save the pipeline as a workflow and run it again any time.
- The right agent for each part Give every stage its own vendor and model.
- Drawn, not written Lay out stages in the app's workflow editor; there's no config file to write.
- Back together Parallel stages meet at a final stage that sees all of their work.
Hands on your Macs
Agents don't just say it works, they check. They see the screen and click through what they built, on any Mac running byre, before calling it done.
- The real thing They type into, click and scroll the actual app, not a mock of it.
- On the web too They drive a browser to test pages end to end.
- Even while it sleeps byre wakes the server's display when an agent needs to look.
Diagrams, not walls of text
Agents explain a design with a real diagram, drawn right in the conversation. Zoom in, and click a box to trace what it touches.
- Big picture first Get the shape of a change before you read a line of it.
- Up close Open any diagram full size and pinch into the detail.
- Guided tours Agents name highlights like "Query path" that light up one flow at a time.
Work that starts itself
Schedule the chores: a dependency bump every Monday, a test sweep every night. And the newest work on your default branch gets audited in the background, without a word from byre unless it finds something.
- On the clock Hourly, daily, on the weekdays you pick, or monthly, with one agent or a whole workflow.
- Bring your own auditor Any workflow can be the audit: a security pass, a docs check, whatever you care about.
- Only the findings An audit with nothing to report puts itself away.
Getting started
- Download byre, sign in to Tailscale, and click Run byre on this Mac.
- Open it on every other Mac you own. Your crew is already there.