3000, and it opens on localhost. The address bar lists the common ports (3000, 4000, 5173, 8080) and the pages you opened last.Your dev server, next to the agent building it.
Open a browser in a project's toolbox and its pages sit beside its sessions. Point at what is wrong on the page, and the agent gets the element, its component and a screenshot.
Browser
Point at it instead of describing it
Turn on the pen (Inspect) and click anything on the page. It drops into the session's field as a chip, carrying the selector, the text, the styles and a screenshot, and, in a dev build of React, Vue, Svelte or Angular, the component it belongs to and its source file. Send it with what you want changed.
Browser
Every project keeps its own browser
Each group of sessions has its own browsers, as many tabs as you like, each with its own page, history and light or dark. They show in the sidebar under the group's sessions: the page's title over its address.
Browser
Light and dark, without a reload
The sun and moon switch the page's prefers-color-scheme on the spot, so you can check both themes while the agent works. It turns amber when the page differs from the app.
The small things.
Made for localhost
Type a port,
The keys you know
Reload with ⌘R, back and forward with ⌘[ and ⌘] or a swipe, and ⌘L for the address.
Full screen, still talking
Full screen gives the page the whole window. A floating field for the selected session stays at the foot, with its status above it.
Web Inspector when you need it
The ⋯ menu has Show Web Inspector (⌥⌘I), Open in Safari and Clear History.
Drop a picture on a pane
Drag an image from the page onto a session's pane and it is attached to what you send.
It stays on your Mac
The pages and the history are the Mac app's own. Nothing about them goes to the daemon, a relay or your phone.
The agent sees what you picked, not your screen
The browser is yours. The agent does not drive it or watch it: what reaches it is the element you picked, written into your prompt with the path of its screenshot, in a session of the same project. Picking selects that session and puts the cursor in its field.
Before you open it.
Can the agent click around in the browser?
No. The agent never drives the page. You pick an element and send it; the agent reads that in your prompt.
Is it on the phone too?
No. The browser is in the Mac app only. The phone apps show your sessions and their activity.
Which pages can it open?
Any address, and plain http too, so a dev server on localhost opens as it is.
Do I need a particular framework for Inspect?
No. Any element gives its selector, text, styles and a screenshot. A dev build of React, Vue, Svelte or Angular also gives the component it belongs to and its source file.