Which job means opening the same pages again and again?
Claude in Chrome reads and clicks pages the way you do. It fits jobs where the answer sits on several websites.
Think of comparing prices, checking stock at suppliers or copying details from a portal into a sheet. Pick one with three sites or fewer. Using the practice job? Write "one hotel, three sites".
What does Claude see, and what could go wrong?
Guess first. The reveals come from Anthropic's safety page.
Show the answer
Screenshots of the tabs it works in. Whatever is visible in those tabs becomes part of the conversation, and Claude can't filter out sensitive content. Use a separate Chrome profile that isn't signed in to your banking, mail or customer systems, and don't open Claude in Chrome while a sensitive page is on screen.
Show the answer
Claude may treat it as an order from you. Text hidden in a page that tries to give Claude orders is called prompt injection. Anthropic calls it the biggest risk for tools that use a browser. Claude in Chrome screens page content and each action it takes, and it blocks or pauses when something looks wrong. The risk is not zero, so stay on sites you trust and stop the task if Claude starts visiting pages you didn't ask for.
Run your first browser job
Five steps. Tick each one when it's done.
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Install the extension.
An extension is a small add-on you install in Chrome. This one, Claude in Chrome, lets Claude read, click and move around websites. Open its page in the Chrome Web Store, click Add to Chrome and sign in with your Claude account. To pin it, click the puzzle piece icon in Chrome's toolbar, then the thumbtack next to Claude.
Browsers other than Chrome aren't supported, and neither are phones.
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Connect it in Claude Desktop.
It sits with your connectors, the links to other apps from course 1. Click your initials at the lower left and choose Settings. Open Customize › Connectors, find Claude in Chrome, click Configure and switch it on.
On Team and Enterprise, your admin may limit the extension or the sites Claude can open. If you can't install it, ask them.
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Start a chat with it switched on.
Claude in Chrome is off in every new chat. Click the + at the lower left of the message box, choose Connectors and switch Claude in Chrome on. A drop-down on the message box sets when Claude asks you first. It may start on Automatically approve. For this first run, choose Manually approve, so Claude stops and asks before each action.
Then paste this. Fill in the brackets with your hotel, two booking sites you're allowed to read, your dates and a room type:
Open these three pages in Chrome: the website of [hotel name], [booking site 1] and [booking site 2]. Find the price for 2 adults, [date] to [date], in a [room type] on all three. Don't sign in, don't book, and don't click anything that reserves a room. Make a table with the site, the room name as the site shows it, the total price for the stay, whether breakfast is included, whether cancelling is free, and the page address. If a price isn't shown, write "not shown" instead of guessing.
Or use the empty table
Attach this CSV file, a plain table that Excel or Google Sheets can open, and ask Claude to fill it in.
- hotel-prices.csvThree rows, six columns · under 1 KB
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Watch the first run.
Switch to Chrome. Claude puts the tabs it opens in a tab group, a set of tabs that Chrome shows together under one color. Approve each action when Claude asks, and say no to anything you didn't ask for.
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Open one page yourself.
Pick one row and open its page address in your own tab. Compare the dates, the number of guests, the room name and the price with the row. If one differs, tell Claude and ask it to show where on the page it read the number.
If you see this instead
- Claude in Chrome isn't in the Connectors list
- It needs a paid plan and the extension installed in Chrome. On Team and Enterprise an admin may have turned it off.
- Claude says it can't use a browser in this chat
- The connector is off by default in every chat. Switch it on for this chat under + › Connectors.
- A booking site asks you to sign in or solve a puzzle
- Claude doesn't get past captchas, and you told it not to sign in. Use a different site, or read that price yourself.
- Two sites show a different price for the same room
- Ask Claude to check the room name, the number of guests and whether taxes are in the price. The rows often differ only by what they include.
Does each row match its page?
A table that looks tidy can still be wrong. Check one row against the page.
With your job
Claude gives you a table with one row per site, and each row has a room name and a page address.
You pass when you open at least one of those addresses in your own tab and the page shows the same dates, guests, room and price as the row. Any price Claude couldn't read must say "not shown" instead of a number.
Two questions from memory
You start a chat and Claude says it can't use a browser. What do you check?
Whether Claude in Chrome is switched on for this chat, under + › Connectors. It's off by default in every new chat, even after you connect it in Settings.
Which plans have Claude in Chrome, and which browsers?
Paid plans only (Pro, Max, Ultra, Team and Enterprise), and only Google Chrome. Browsers other than Chrome aren't supported, and neither are phones.
Lesson 3 opens by asking the first one again.
Cowork also has a browser built into Claude Desktop. If you already use Claude in Chrome, Cowork keeps using it. You can choose in Settings › Cowork › Preferred browser. You stay responsible for what Claude does on a site, including that site's rules on automated visits.
Course 2 so far
What you've built
- Lesson 1: Tip calculator
- Lesson 2: Browser comparison