Watch a profile’s traffic in your own debugging proxy, exit intact
Route launches through Proxyman, Charles, mitmproxy, Fiddler or Burp. The inspector sits in front and forwards back to Mosaic, so the profile still leaves from its own exit.
Mosaic is a desktop app
Email yourself the link and open it on your computer.

Traffic inspection, step by step
Turn it on
In Mosaic, open Settings › Network and choose your inspector.
One order that works
Browser, then the inspector, then Mosaic’s relay, then the profile’s exit. Proxyman is wired up for you and put back when you turn it off; the others need their upstream set once.
Launch as usual
The next launch goes through the inspector. A profile already open keeps the route it started with, and Mosaic says how many browsers the setting has not reached yet.
Works with
A profile does not open until its proxy has answered
No profile opens behind a proxy that has not answered.
REST APIEverything the window does, from a script on your own computer
Everything the window does, from your own scripts.
Its own ChromiumThe fingerprint is changed inside the engine, not painted on top
Tesseract Chrome: values changed in C++, not JavaScript.
Traffic inspection is in every plan
Free holds 3 profiles and 10 profile creations, with the same engine as Pro. Pro is $49 a month for any number.
Mosaic is a desktop app
Email yourself the link and open it on your computer.