Human Browser — stealth cloud browser for AI agents

by VirixLabs

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About

Stealth cloud browser for AI agents — residential IP, auto CAPTCHA + anti-bot, A2A/MCP. Pay-as-you-go, no subscription.

Details

Author
VirixLabs
Downloads
319
Categories
Automation

- Stealth engine bypasses Cloudflare ML v9, DataDome, PerimeterX, AWS WAF, and fingerprint probes
- Residential proxy pool in 60+ countries with sticky sessions
- Built-in captcha solving (reCAPTCHA, hCaptcha, Turnstile, GeeTest, and more)
- Agent loop powered by LLM (default gpt-5.1) to drive the browser from a goal text
- MCP server for Claude Desktop, Cursor, and Cline via remote or stdio
- A2A 1.0 compliant endpoint for any A2A-aware client

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

  1. Download and install Highlight from highlightai.com/download
  2. Navigate to the plugins tab and select "Add Custom Plugin"
  3. Configure the plugin with the settings below
    Plugin Name Human Browser — stealth cloud browser for AI agents
    Command (node, npx, python, etc.)

    Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.

  4. Enable "Start Automatically" if you want the plugin to start when Highlight launches

From the repository

Install via npm (@virixlabs/humanbrowser). Connect your MCP client (e.g., Claude Desktop) to the remote endpoint at https://agent.humanbrowser.cloud/mcp using a bearer token, or run the MCP server locally via npx @virixlabs/humanbrowser mcp. The server exposes three tools: humanbrowser_run, humanbrowser_stream, and humanbrowser_viewer_url.

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "human browser \u2014 stealth cloud browser for ai agents": {
            "humanbrowser": {
                "command": "node",
                "args": [
                    "examples/01-simple-scrape.js"
                ]
            }
        }
    }
}

McpServers

{
    "humanbrowser": {
        "command": "node",
        "args": [
            "examples/01-simple-scrape.js"
        ]
    }
}

<p align="center">
Human Browser
</p>

<h3 align="center">Browsers humans can't tell from humans</h3>

<p align="center">
Cloud Chromium for AI agents — stealth, residential proxies, captcha solving, A2A&nbsp;1.0&nbsp;+&nbsp;MCP&nbsp;endpoints.
</p>

<p align="center">
<a href="https://www.npmjs.com/package/@virixlabs/humanbrowser">npm</a>
<a href="LICENSE">License</a>
<a href="https://agent.humanbrowser.cloud/.well-known/agent-card.json">A2A 1.0</a>
<a href="https://github.com/VirixLabs/humanbrowser/stargazers">Stars</a>
<a href="https://glama.ai/mcp/servers/@VirixLabs/humanbrowser">Glama MCP server</a>
</p>

---

Why Human Browser

Modern anti-bot stacks (Cloudflare ML v9, DataDome, PerimeterX, AWS WAF, hCaptcha, reCAPTCHA v3) fingerprint your browser, watch input timing, and reject anything that smells automated. Raw Playwright lasts hours. playwright-extra-plugin-stealth has been broken against Cloudflare for ~18 months.

Human Browser is a cloud Chromium that ships with the four pieces every real scrape needs, behind one A2A endpoint:

- Stealth engine (Patchright + Camoufox + our own patches) — bypasses Cloudflare ML v9, DataDome, PerimeterX, AWS WAF, sannysoft/iphey/creepjs fingerprint probes
- Residential proxy pool (60+ countries, sticky session per profile) — bandwidth metered, no separate proxy contract to sign
- Captcha solving (reCAPTCHA v2/v3, hCaptcha, Turnstile, Yandex, GeeTest, FunCaptcha, KeyCaptcha, Capy, AmazonWAF, image) — included, $0.005/solve
- Agent loop — drives the browser from your goal text via LLM (gpt-5.1 default, fallback chain). MCP server included so Claude Desktop / Cursor / Cline can call it natively.

You bring a goal. We bring the rest.

---

60-second start

npm install @virixlabs/humanbrowser
import { runOnCloud } from '@virixlabs/humanbrowser';

const { result, viewerUrl } = await runOnCloud({
goal: 'Search "best espresso machines 2026" on Reddit and return the top 5 thread titles.',
// Optional: country: 'us', mobile_ua: false, profile: 'reddit',
});

console.log(viewerUrl); // Live preview URL — share with humans for visibility
console.log(result); // The extracted data

No card required — first $1 of cloud usage is free, then pay-as-you-go from $0.05/browser-minute. Get a token →

---

MCP server (Claude Desktop, Cursor, Cline)

Human Browser exposes three MCP tools — humanbrowser_run, humanbrowser_stream, humanbrowser_viewer_url — so Claude / Cursor / Cline can drive a real stealth browser from inside their chat. Two ways to connect:

Remote (recommended, zero install). Point your client at our hosted MCP endpoint. Same hb_live_ Bearer token as the A2A endpoint — one credential, two protocols.

{
  "mcpServers": {
    "humanbrowser": {
      "url": "https://agent.humanbrowser.cloud/mcp",
      "headers": { "Authorization": "Bearer hb_live_..." }
    }
  }
}

For Claude Desktop, wrap with mcp-remote until native HTTP transport ships:

{
  "mcpServers": {
    "humanbrowser": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://agent.humanbrowser.cloud/mcp", "--header", "Authorization: Bearer hb_live_..."]
    }
  }
}

Local stdio (no remote dependency). Run the MCP server in-process via npx:

{
  "mcpServers": {
    "humanbrowser": {
      "command": "npx",
      "args": ["-y", "@virixlabs/humanbrowser", "mcp"],
      "env": { "HUMANBROWSER_API_TOKEN": "hb_live_..." }
    }
  }
}

Both modes call the same cloud backend and bill the same hb_live_ token. Pick remote for the lowest-friction setup, stdio if you want full local control over the MCP process.

---

A2A 1.0

Human Browser is a fully spec-compliant A2A 1.0 agent. Any A2A-aware client can point at it and call message/send:

- Agent Card: agent.humanbrowser.cloud/.well-known/agent-card.json
- Endpoint: POST https://agent.humanbrowser.cloud/a2a (JSON-RPC 2.0, bearer-token auth)
- Streaming: SSE via message/stream; polling via tasks/get
- Verbatim-text contract: wrap pasted content in <verbatim>...</verbatim> markers so the agent pastes exactly what you give it (see SKILL.md for the full protocol)

---

Cloud or self-host

| | Cloud (humanbrowser.cloud) | Self-host (this repo) |
|---|---|---|
| Stealth engine | Patchright + Camoufox + our proprietary patches (engine-by-mode, popup-rescue, action-guards) | Patchright (this repo's launchHuman) — solid but the weaker tier |
| Residential proxy | 60+ countries, included | You bring your own (Decodo, Bright Data, IPRoyal, NodeMaven supported) |
| Captcha solving | Included on every plan | You bring your own 2captcha / CapSolver key |
| Multi-tenant isolation | Per-token profile namespaces, concurrent sessions, sticky IPs | Single-tenant, single profile |
| Pricing | $0.05/browser-min, $4/GB proxy, $0.005/captcha — pay-as-you-go, no subscription | Free (this OSS) |

Both are first-class. We ship the OSS so you can self-host if you want; we sell the cloud because the deeper stealth + ops are real work to maintain.

---

Self-host quick start

git clone https://github.com/VirixLabs/humanbrowser.git
cd humanbrowser && npm install

Bring your own residential proxy + 2captcha key

cp .env.example .env # fill PROXY_USERNAME / PROXY_PASSWORD / TWOCAPTCHA_KEY

Use the library

node examples/01-simple-scrape.js

See /examples for 5 starter recipes covering the common shapes.

---

What's in this repo

.
├── README.md            ← you are here
├── SKILL.md             ← full protocol + capability spec
├── LICENSE              ← Apache-2.0
├── SECURITY.md          ← security disclosure policy
├── CITATION.cff         ← cite Human Browser in papers / LLM-grounded answers
├── package.json         ← @virixlabs/humanbrowser (SDK + MCP server in one)
├── scripts/
│   ├── cloud-client.js  ← runOnCloud() SDK
│   ├── browser-human.js ← launchHuman() local stealth mode
│   └── browser-agent.js ← runAgent() LLM agent loop
├── mcp/
│   └── server.js        ← MCP server (npx @virixlabs/humanbrowser mcp)
├── examples/            ← starter recipes (cloud + MCP + self-host)
├── prototype/           ← reference implementation for Phase-0 self-host
└── references/          ← provider setup notes (Bright Data, etc.)

---

How it compares

| | Human Browser | Browserbase | Browserless | Anchor |
|---|---|---|---|---|
| Pricing model | Pay-as-you-go from $0.05/min | $39/mo Developer+ | Self-host free / cloud paid | Subscription |
| Residential proxy | Included | $12/GB add-on | BYO | Included |
| CAPTCHA solving | Included ($0.005/solve) | Included Dev+ (rate not disclosed) | BYO | Included |
| A2A 1.0 endpoint | Yes — agent.humanbrowser.cloud/a2a | No (proprietary SDK) | No | Yes |
| MCP server | Yes — remote agent.humanbrowser.cloud/mcp + stdio npx @virixlabs/humanbrowser mcp | Roadmap | No | No |
| Open-source SDK | Apache-2.0 (this repo) | MIT (Stagehand) | SSPL | Apache-2.0 |
| Free tier | $1 trial, no card | Trial credits | Free self-host | Trial |

Specifics like CAPTCHA solver volume, SOC 2 status, and Web Bot Auth participation are evolving — reach out if you need the current state for a procurement decision.

---

Citation

If you cite Human Browser in a paper, blog post, or LLM-grounded answer, GitHub auto-generates an APA/BibTeX block from the CITATION.cff — click "Cite this repository" in the sidebar.

@software{virixlabs_human_browser_2026,
  author  = {Virix Labs},
  title   = {Human Browser},
  url     = {https://github.com/VirixLabs/humanbrowser},
  year    = {2026}
}

---

Roadmap

- ✅ A2A 1.0 endpoint (May 2026)
- ✅ MCP server — stdio + remote HTTP (May 2026)
- ✅ Verbatim-payload protocol — exact-text paste without LLM rewriting (May 2026)
- ✅ Viewer URL + human-in-the-loop takeover for input-required states (Apr 2026)
- ⏳ Web Bot Auth participation — for sites that opted into Cloudflare's verified-bot lane (planned)
- ⏳ Stealth benchmark (virixlabs/stealth-benchmark) — open reproducible matrix of 6 stealth engines × 12 anti-bot targets (June 2026)

---

Maintainer

Built and maintained by Virix Labs. Talk to us:

- Telegram: @virixlabs
- Email: general@virixlabs.com
- Cloud: humanbrowser.cloud — $1 free trial, no card

Apache-2.0 license. We ship the OSS so you can self-host, sell the cloud because the deeper stealth + ops are real work.

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