Capability	Description
Live Debugging	Read console errors, DOM state, fix code directly
Design Verification	Build UI, open in browser, verify against mocks
Web App Testing	Test forms, check regressions, verify user flows
Authenticated Apps	Access Google Docs, Gmail, Notion using your login
Data Extraction	Pull structured data from web pages
Task Automation	Automate data entry, form filling, multi-site workflows
Session Recording	Record browser interactions as GIFs

Setup

Option 1: At startup

claude --chrome

Option 2: In-session

/chrome

Run /chrome to check status. If extension not detected, you'll see install instructions.

How It Works

When Claude encounters login pages, CAPTCHAs, or other blockers:

Open localhost:3000, check the console for errors,
and fix any issues you find in the code

Go to my signup form at localhost:3000/signup,
try submitting with invalid data, and verify
the error messages are correct

Go to https://example.com/products, extract all
product names and prices, and save them to products.json

Open localhost:3000 and compare the header layout
to this Figma screenshot: [paste screenshot]

Log into my staging site, navigate to settings,
update the company name to "Acme Corp", and
take a screenshot of the confirmation

Start Claude with Chrome
- Run claude --chrome
- Verify connection with /chrome
Navigate to Your App
- Ask Claude to open your URL
- Wait for page to load
Debug Issues
- Claude reads console errors
- Claude inspects DOM state
- Claude fixes code in terminal
- Refresh to verify fix
Document Results
- Record GIF of working feature
- Commit fixes

# Good
Go to localhost:3000/dashboard

# Avoid
Open my app

Run the tests, then open the coverage report
in Chrome and summarize the uncovered areas

Build a card component matching this design,
then open it in Chrome and verify the spacing

Wait for the loading spinner to disappear,
then extract the table data

Limitation	Details
Chrome Only	No Brave, Arc, or other Chromium browsers
No WSL	Windows Subsystem for Linux not supported
No Headless	Requires visible browser window
Your Session	Uses your login state (feature, not bug)
Extension Required	Claude in Chrome must be installed

Issue	Solution
Extension not detected	Install/update Claude in Chrome extension
Connection failed	Restart Chrome, try `/chrome` again
Can't access site	Log in manually, then tell Claude to continue
Action failed	Try being more specific about what to click/type
Slow responses	Close unnecessary Chrome tabs

Resource	Description
Chrome Docs	Official documentation
Extension	Chrome Web Store link
`/chrome`	In-session status and management

Element	Requirement
Status	Beta (Chrome only, no Brave/Arc/WSL)
CLI Flag	`claude --chrome`
Slash Command	`/chrome` (status/enable in-session)
Extension	Claude in Chrome v1.0.36+
Claude Code	v2.0.73+
Plan	Pro, Team, or Enterprise