Browser

Browser isn’t available in ZeroTwo desktop app or the ZeroTwo desktop app. Open the ZeroTwo desktop app to use the built-in browser. Browser lets ZeroTwo open websites, gather current information, and take action while you stay in control. Use it to compare options, complete a multi-step task on a website, or review a page you’re building. Browser is available in ZeroTwo on the web and in the ZeroTwo desktop app. Treat page content as untrusted context. Review the site and proposed action before sharing sensitive information or allowing ZeroTwo to act.

ZeroTwo on the web

The built-in browser in the ZeroTwo desktop app gives you and ZeroTwo a shared view of websites and local web apps inside a chat. Use it to preview a page, leave visual feedback, or let ZeroTwo interact with a site on your behalf.The built-in browser uses a browser profile that is separate from your regular browser. It doesn’t automatically share your existing tabs or browser session. You can sign in directly when a task requires an account. Open Settings > Browser to manage browser data and any profile-import features available on your device.Browser downloads go to your system Downloads folder by default. In Settings > Browser, you can choose another download location, reset it to the system default, or turn on Ask where to save downloads.Use the Chrome extension instead when ZeroTwo needs to work in an existing Chrome tab or use your regular Chrome profile.Open the built-in browser from the toolbar, by clicking a URL, by navigating manually, or by pressing Cmd+Shift+B (Ctrl+Shift+B on Windows).

ZeroTwo built-in browser open to a local Atlas Launch analytics dashboard

Search from the address bar

Start typing in the built-in browser’s address bar to find pages from its browsing history. Select a matching page to reopen it, or enter a search term to search Google when no history result matches.The built-in browser keeps its own profile and browsing history. Results don’t automatically include pages from your regular Chrome profile or other browsers.

Manage browsing history

Open Settings > Browser to search the built-in browser’s history, reopen a visited page, or remove history entries when your organization permits it. Use Clear browsing data to choose a time range and the types of browsing data you want to remove.When available, ZeroTwo can ask to search your browsing history to find a page that matters to the current task. Review the request before allowing access. Browsing history can include internal URLs, search terms, and other sensitive information, so allow it only when the task requires that context.

Computer Use in the browser

In the desktop app, Computer Use lets ZeroTwo Work or ZeroCode operate the built-in browser directly. The selected experience can open pages, click, type, inspect rendered state, take screenshots, and verify the result of its work in the page.Select ZeroTwo and turn on Work in the switcher, or select ZeroCode. Open the Plugins Directory and install Browser. Then ask ZeroTwo or ZeroCode to use the browser in your task, or reference it directly with @Browser.For example:

Use the browser to open http://localhost:3000/settings, reproduce the layout
bug, and fix only the overflowing controls.

ZeroTwo asks before it uses a website unless you have already allowed that site. Manage allowed and blocked sites in Settings > Browser. ZeroTwo also asks for confirmation before sensitive actions such as submitting information, making a purchase, changing permissions, or deleting data. ZeroTwo can’t automate file uploads in the built-in browser.Instructions on a page can be misleading or malicious. A website permission lets ZeroTwo interact with that site; it doesn’t make the site’s content trustworthy or approve every action.

Preview a page

Start your app’s development server in the integrated terminal or with a local environment action.
Open the local route, file-backed page, or public page by clicking a URL or navigating manually in the browser.
Review the rendered state alongside the code diff.
Leave browser comments on the elements or areas that need changes.
Ask ZeroTwo to address the comments and keep the scope narrow.

For example:

I left comments on the pricing page in the built-in browser. Address the mobile
layout issues and keep the card structure unchanged.

Comment on the page

When a bug is visible only in the rendered page, use browser comments to give ZeroTwo precise feedback.

Turn on Annotation mode.
Click an element, or drag to select an area.
Write and save your comment.
Send a message in the chat asking ZeroTwo to address the comments.

Comments work best when you name the problem and the result you want:

This button overflows on mobile. Keep the label on one line if it fits,
otherwise wrap it without changing the card height.

This tooltip covers the data point under the cursor. Reposition the tooltip so
it stays inside the chart bounds.

Styling feedback

When you add an annotation to a section on the page, select Adjust next to the text input to give ZeroTwo more granular style feedback. You can change values such as font, text, spacing, and color, preview the result on the page, and then send the annotation with a clearer target.

ZeroTwo built-in browser styling controls for an annotated chart heading

Keep browser tasks scoped

Keep each browser task small enough to review in one pass.

Name the page, route, or URL.
Name the state you care about, such as loading, empty, error, or success.
Leave comments on the exact elements or areas that need changes.
Review the page again after ZeroTwo finishes.
Ask ZeroTwo to start or check the development server before it opens a local page.

For repository changes, use the review pane to inspect the changes and leave comments.

Developer mode

Developer mode works with Computer Use in Chrome and the built-in browser. It gives ZeroTwo controlled access to the Chrome DevTools Protocol (CDP). Use it to profile JavaScript, inspect console output and network traffic, examine the DOM and applied styles, or diagnose an issue in the live browser.To enable it, open Settings > Browser and, under Developer mode, turn on Enable full CDP access. If your organization has disabled this setting, you can’t enable it locally. Admins can set browser_use_full_cdp_access = false under [features] in requirements.toml to disable full CDP access and prevent users from enabling the corresponding setting in the ZeroTwo desktop app.Full CDP access can expose sensitive browser internals. ZeroTwo asks for explicit approval before it uses full CDP to inspect a website. Review the site, task, and requested access before approving it.Use @Browser for the built-in browser. To use Developer mode in Chrome, set up the Chrome extension and invoke @Chrome.For example:

This app is slow. Use @Browser to capture a performance trace and inspect
network traffic, then identify the bottleneck.

ZeroTwo desktop app Browser settings showing Developer mode with full CDP access enabled

With ZeroTwo Work on the web, ZeroTwo can use a cloud-operated browser to research and interact with public websites. It runs separately from the browser on your device, so you can delegate web tasks without giving ZeroTwo access to your open tabs or personal browser history.

Start browser work

Select ZeroTwo, switch to Work in the switcher, and describe the result you want. Include relevant websites or constraints when they matter.
If ZeroTwo needs a website, review the site-access request before allowing it.
Follow the browser’s progress in the chat. Open Cloud browser to inspect the page screenshots and replay.
Review the result and any sources before using the information.

For example:

Compare the publicly listed prices and cancellation terms for these three
venues. Return a table with links to each source and flag anything that needs a
phone call to confirm.

Other useful browser tasks include checking public inventory or appointment times, gathering details from an interactive site, and comparing options whose information is spread across several pages.

Website permissions and confirmations

ZeroTwo asks before accessing a new website by default. The permission applies to the site shown in the request, so check the hostname before allowing it.In ZeroTwo settings, open Cloud browser to manage website permissions. You can choose Always ask, Auto approve, or Always allow, and you can allow or block individual sites. Auto approve lets ZeroTwo approve requests after its risk checks; Always allow removes that review step for website access. Use the least-permissive setting that works for your task.A website permission doesn’t approve every action. ZeroTwo may ask separately for permission before performing consequential actions.

Browser data

The cloud-operated browser keeps its cookies and browser data separate from the browser on your device. Clearing cloud browser data doesn’t clear cookies from your device. To remove its cookies, open Cloud browser in ZeroTwo settings, select Browser data, and choose Clear all.Don’t rely on open pages or browser history being available in a later chat. Include the important sites and context when you start new work.

Limitations

The browser supports public, signed-out websites. It can’t sign in to an account, ask for credentials, or use the signed-in session from your browser.
Some sites block automated browsers or require a CAPTCHA. ZeroTwo may not be able to complete a task on those sites.
The browser is separate from the browser on your device. It can’t use your open tabs, extensions, saved passwords, or local browser history.
Availability can depend on your plan, workspace settings, and rollout. It is available in all regions on paid plans other than Free and Go. Enterprise admins must enable it for their workspace.

During rollout, the browser might not appear immediately even when your plan supports it.

Workflows

Capabilities

Reference

Search from the address bar

Manage browsing history

Computer Use in the browser

Preview a page

Comment on the page

Styling feedback

Keep browser tasks scoped

Developer mode

Start browser work

Website permissions and confirmations

Browser data

Limitations

​Search from the address bar

​Manage browsing history

​Computer Use in the browser

​Preview a page

​Comment on the page

​Styling feedback

​Keep browser tasks scoped

​Developer mode

​Start browser work

​Website permissions and confirmations

​Browser data

​Limitations

Search from the address bar

Manage browsing history

Computer Use in the browser

Preview a page

Comment on the page

Styling feedback

Keep browser tasks scoped

Developer mode

Start browser work

Website permissions and confirmations

Browser data

Limitations