Reverse engineer anything with agents, from app behavior down to native binaries.
Open Claude In Chrome
Claude in Chrome, reverse-engineered and open-source. No domain blocklist. Any Chromium browser. Same 18 MCP tools, same performance.
Install
$
claude mcp add open-claude-in-chrome-hybrid -- node /absolute/path/to/host/codemode/server-hybrid.jsInstall command taken from the project's README or registry entry. Always review code before running it.
README excerpt
Read full README on GitHub →Open Claude in Chrome
Official Claude in Chrome gives you 58 blocked domains and two browsers. Open Claude in Chrome gives you the whole web.
Clean-room reimplementation of Anthropic's browser extension. No blocklist. Any Chromium browser. 100% feature & performance parity.
by noemica
What's different · Install · Imitation learning · Architecture · Demo · How I built it
Watch Claude navigate Tinder, Reddit, and Robinhood — sites the official extension can't reach.
The official Claude in Chrome extension gives Claude Code full browser automation — as long as you stay within Anthropic's allowlist of "safe" sites. Open Claude in Chrome is a clean-room reimplementation that strips the restrictions while keeping all 21 MCP tools and matching the official extension's performance.
What's Different
| Claude in Chrome | Open Claude in Chrome | |
|---|---|---|
| Domain blocklist | 58 blocked domains across 11 categories | No blocklist. Navigate anywhere. |
| Browser support | Chrome and Edge only | Any Chromium browser (Chrome, Edge, Brave, Arc, Opera, Vivaldi, etc.) |
| Source code | Closed source | Open source (MIT) |
| Tools | 21 MCP tools | Same 21 MCP tools |
| Performance | Baseline | Identical |
Blocked Domains in the Official Extension
| Category | Blocked Sites |
|---|---|
| Banking | Chase, BofA, Wells Fargo, Citibank |
| Investing/Brokerage | Schwab, Fidelity, Robinhood, E-Trade, Wealthfront, Betterment |
| Payments/Transfers | PayPal, Venmo, Cash App, Zelle, Stripe, Square, Wise, Western Union, MoneyGram, Adyen, Checkout.com |
| BNPL | Klarna, Affirm, Afterpay |
| Neobanks/Fintech | SoFi, Chime, Mercury, Brex, Ramp |
| Crypto | Coinbase, Binance, Kraken, MetaMask |
| Gambling | DraftKings, FanDuel, Bet365, Bovada, PokerStars, BetMGM, Caesars |
| Dating | Tinder, Bumble, Hinge, Match, OKCupid |
| Adult | Pornhub, XVideos, XNXX |
| News/Media | NYT, WSJ, Barron's, MarketWatch, Bloomberg, Reuters, Economist, Wired, Vogue |
| Social Media |
Open Claude in Chrome has none of these restrictions.
Does it actually match the official extension?
Yes — and rather than assert it, here is a benchmark. Read the full study →
17 arms, each run over the same 12 held-out tasks from the REAL web-agent benchmark, same model and effort throughout (Sonnet, medium). What it found:
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