Stealth Agent Browser MCP server

by ykshah1309·io.github.ykshah1309/stealth-agent-browser-mcp·v0.2.0·1 stars

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Stealth Chromium MCP server with hybrid AOM + Set-of-Mark vision and Readability extraction.

B72/100grade B

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Safety scan

B72/100

full report

Adoption

New

1 stars58 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Stealth Agent Browser tools (13, 1 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

browser_click
Click an element addressed by its ref. When SAB_HUMAN_MOUSE=true (default), the cursor travels via a Bezier path with pre-click hesitation — this defeats trajectory analyzers like Datadome that flag teleporting mice.
browser_eval
Evaluate a JS EXPRESSION in the page's MAIN execution world. Observable by page scripts; use sparingly. Prefer AOM + action tools.
browser_navigate
Navigate the active session's page to a URL. Returns a snapshot (default: aom-only, cheapest).
browser_restart
Close the active browser session and start a fresh one with the current config. Required after 'browser_set_proxy' to actually route new requests through the proxy.
browser_scroll_read
Scroll and return a Readability-extracted Markdown view. With deltaOnly=true, returns '(no change)' if nothing new became visible — keeps context windows lean.
browser_select
Select one or more options in a <select> addressed by ref.
browser_set_proxywrite action
Update the proxy config. Call 'browser_restart' after this for the change to take effect (browser-level constraint — an existing context cannot be re-routed).
browser_set_proxy_pool
Replace the residential proxy pool at runtime. Takes effect on the next 'browser_restart'. Supports sticky sessions via SAB_PROXY_STICKY_TEMPLATE.
browser_snapshot
Take a snapshot of the current page. 'aom' returns the accessibility YAML (token-lean); 'hybrid' adds a Set-of-Mark screenshot with numeric red boxes matching each ref.
browser_solve_captcha
Fallback captcha solver. Detects Turnstile/hCaptcha/reCAPTCHA on the current page (or takes an explicit sitekey), submits to the configured provider (CapSolver or 2Captcha per SAB_CAPTCHA_PROVIDER + SAB_CAPTCHA_API_KEY), polls for a token, and injects it into the widget's response field.
browser_tabs
Manage browser tabs: list, new, close, switch.
browser_type
Type into an input or textarea addressed by ref.
browser_wait_for
Wait until either some text appears on the page or a given ref resolves to a visible element.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings

Code scan30 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitystatic API keys via environment variables6/15
Maintenancelast push 166 days ago8/15
Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Overall 72/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

How Stealth Agent Browser compares

Against every graded Scraping and browsing MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 72/100; higher than 38% of 866 Scraping and browsing servers
Tools: 13; the typical Scraping and browsing server has 6
Tools that change things: 8%; typical: 0%. Fewer write tools means less an agent can break
GitHub stars: 1; more than 50% of 583 Scraping and browsing servers
Downloads a week: 58; more than 40% of 309 Scraping and browsing servers with a package

What its tools let an agent do: 12 read · 1 change

Install Stealth Agent Browser in Claude Code, Cursor or VS Code

Runs npx -y stealth-agent-browser-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add stealth-agent-browser-mcp -- npx -y stealth-agent-browser-mcp

Add to Cursor

What the publisher says

From the Stealth Agent Browser repository's README, as published. We do not edit it. Read it on GitHub

stealth-agent-browser-mcp

A Model Context Protocol (MCP) server that gives AI agents a stealth-grade Chromium browser with a hybrid Accessibility-Object-Model + Set-of-Mark vision interface. Built for Claude, works with any MCP-compatible host.

Stealth first. Uses rebrowser-playwright to patch the Runtime.Enable CDP leak that bypasses playwright-extra-class stealth plugins. Passes modern bot-detection suites (CreepJS, bot.sannysoft.com) where vanilla Playwright fails.
Token-lean by default. browser_snapshot returns Playwright aria snapshot YAML (~2–5 KB) instead of raw HTML (100KB+). Every interactive element carries a [ref=eN] id that actions consume directly — no selectors, no drift.
Hybrid vision when it matters. Ask for mode: "hybrid" and the server overlays numbered red boxes on the screenshot so the model can ground visually (Set-of-Mark prompting, Yang et al.). The ref ids on the image match the ids in the YAML. No parallel numbering scheme to go out of sync.
Readability-based content extraction. browserscrollread runs Mozilla Readability through JSDOM and returns clean Markdown — optionally delta-only, so re-reads cost nothing when nothing changed.
Proxy-ready. Per-session proxy auth, useful with residential pools.

Authorized use only. Stealth tooling has legitimate applications (accessibility auditing, your-own-account automation, QA against sites you own or have permission to test). Do not use this server to violate a site's terms of service or applicable law. See SECURITY.md.

Install

npm install -g stealth-agent-browser-mcp
# Chromium binary is fetched automatically on first launch
npx playwright-core install chromium

Or run without install via npx stealth-agent-browser-mcp.

Quickstart (Claude Desktop / Claude Code / Cursor)

Add to your MCP config:

{
  "mcpServers": {
    "stealth-browser": {
      "command": "npx",
      "args": ["-y", "stealth-agent-browser-mcp"],
      "env": {
        "SAB_HEADLESS": "true",
        "SAB_STEALTH_LEVEL": "patched"
      }
    }
  }
}

Restart the host. The agent will see the tools listed below.

Tools

All action tools are addressed by the ref emitted in the last AOM snapshot. Refs are Playwright's own aria-ref=eN ids — there is no parallel numbering scheme.

Configuration

All via environment variables:

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Stealth Agent Browser: common questions

Is Stealth Agent Browser MCP server safe?: Mostly: it is graded B (72/100). Read the Stealth Agent Browser safety report
How do I install Stealth Agent Browser?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Stealth Agent Browser need an API key?: Yes. The registry entry asks for SAB_PROXY_USERNAME, SAB_PROXY_PASSWORD.
Is Stealth Agent Browser maintained?: The last commit was 204 days ago (2026-04-14). The latest release is v0.2.0.
What can I use instead of Stealth Agent Browser?: Servers from other publishers that do the same job: Browser Use MCP server, Ui.Vision MCP server and CloakBrowser MCP server.
How does Stealth Agent Browser compare with other Scraping and browsing MCP servers?: safety score 72/100 (higher than 38% of 866 Scraping and browsing servers); tools 13 (the typical Scraping and browsing server has 6); tools that change things 8% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

Alternatives to Stealth Agent Browser

Same job from other publishers: the closest match first, then the best rated.

Browser Use
Browser agents and stealth cloud browsers for AI: run web tasks, fill forms, extract data.
not reviewed
Established
A
Ui.Vision MCP
MCP server for browser and desktop automation: OCR, image recognition, real mouse and keyboard input
not reviewed
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B
CloakBrowser MCP
Playwright MCP-compatible browser automation bridge for CloakBrowser Chromium.
not reviewed
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B
Fortress
Stealth browser for AI agents: fetch pages behind Cloudflare/DataDome/CAPTCHA, extract clean data.
not reviewed
Established
B
MCP Browser
Browser automation using the user's Chromium session — JS execution, auth, and anti-bot support.
More from cherchyk →
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Run it through the gateway

Local package. It runs on your machine, not through the gateway.

Rating: —
Safety grade: B · 72/100
Stars: 1
Downloads/wk: 58
Price: Free
Licence: Apache-2.0
Transport: Local · npm
Version: 0.2.0
Category: Scraping and browsing
Last release: 2026-04-14

Credentials it needs

SAB_HEADLESSRun Chromium headless. Default: true.
SAB_STEALTH_LEVELoff | patched | paranoid. Default: patched.
SAB_PROXY_SERVEROptional proxy URL, e.g. http://host:port.
SAB_PROXY_USERNAMEsecretOptional proxy username.
SAB_PROXY_PASSWORDsecretOptional proxy password.
SAB_USER_DATA_DIRPersistent browser profile directory.

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