Connect your machine.
Add your machine, verify its identity, and follow the setup instructions.
YOUR REMOTE MACHINE. YOUR CALL.
Your agent
keeps working.
You stay
in control.
When a task needs administrator permission on your remote Ubuntu machine, Syn brings the request to your Mac. Review it, approve with Touch ID or your Mac login password, and let the work continue.
macOS 15+ · Apple silicon
Opening may require “Open Anyway” in Privacy & Security.
developer@dev-box ~/project
Installing GitHub CLI…
Waiting for your approval
SynRemote approval
1:30Your machine needs a hand.
Review this request from dev-box.
Executable
/usr/bin/apt-getRun asrootDenyApprove
One request. One decision.
A little pause. A deliberate yes.
Remote approvals that meet you where you are.
MEET SYNTHE MOMENT THAT MATTERS
The work is happening remotely.
The decision comes to you.
Syn works with eligible sudo requests from agents and commands you start yourself. No particular agent integration required.
01 / WORK
Your agent gets to work.
Building, fixing, making progress.
02 / PAUSE
A task needs sudo.
The request waits for your decision.
03 / DECIDE
It finds you on your Mac.
Review the details. Make the call.
A MOMENT OF CONTROL
Go on. Make the call.
Start a request on a fictional machine.
See what happens on both sides.
Interactive demo — no commands run.
01 ON YOUR REMOTE MACHINE
developer@dev-box ~/project
Install GitHub CLI
Ready when you are.
This fictional task needs
administrator permission.
Ready to start
Your decision applies to this request only.
02 ON YOUR MAC
SynRemote approval
—Your call, when it’s time.
Start the remote task to see its request here.
- Machine
- dev-box
- Requesting account
- developer
- Run as
- root
- Executable
/usr/bin/apt-get- Arguments
installgh- Working directory
/home/developer/project
Applies to this request only
In the real app, every approval requires fresh Touch ID or Mac login-password authentication.
This demo simulates that step and never asks for a password.
FROM SETUP TO “ALL DONE”
Close the distance.
Keep the decision.
Everyday approvals connect directly between
your paired Mac and remote machine.
No Syn cloud relay.
Review the request.
See which machine is asking, who’s asking, and exactly what needs permission.
Approve.
Authenticate on your Mac. That one task can continue. The next request needs a new decision.
First setup includes a one-time command in a trusted administrator terminal on the remote machine.
Read the setup guide20 SECONDS WITH SYN
A small interruption.
A smoother workflow.
See a request make its way from the remote machine to your Mac.
Machine and command details in this film are fictional.
CONTROL, BY DESIGN
A clear request.
A deliberate decision.
One approval. One request.
No standing grants. Each new request needs its own decision.
The details come first.
Review the machine, account, executable, and separate arguments. Potentially sensitive arguments stay hidden until revealed.
Your Ubuntu password stays remote.
Syn doesn’t collect it or send it to your Mac.
Fresh authentication. Every time.
Approve with Touch ID or your Mac login password. An unanswered request is never automatically approved.
Syn adds approval after normal sudo policy. It doesn’t decide whether a command is safe. Approving an administrator command can permit powerful changes.
A FEW GOOD QUESTIONS
Before you
make the connection.
Does Syn only work with Codex?
No. Syn works with eligible sudo requests, including requests from other agents and commands you start yourself.
Do I need a Syn cloud account?
No. Your Mac needs a direct network route to the paired remote machine, such as the same LAN or a virtual network like Tailscale. If you use Tailscale for that connection, stay connected to receive requests and allow the connection in its access rules.
How long do I have to respond?
Requests expire after 90 seconds. Syn never automatically approves an unanswered request. An interactive remote terminal may then offer its normal password prompt.
Can I approve from my phone?
The iOS app is coming soon.
LET’S KEEP THINGS MOVING
Let the work continue.
Keep the decision yours.
macOS may require “Open Anyway” in
System Settings → Privacy & Security. Keep system-wide protections enabled.
YOUR MAC
macOS 15+ on a Secure Enclave-capable Apple silicon Mac.
YOUR REMOTE MACHINE
Ubuntu 26.04 ARM64 with classic sudo.ws 1.9.x. Raspberry Pi 5 is a tested example, not a requirement.
BEFORE FIRST SETUP
Existing administrator access and an independent way to recover access are required.