Parallel Browser MCP server

by etairl·io.github.etairl/parallel-browser-mcp·v0.1.14·42 stars

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MCP server for parallel browser automation across multiple providers.

B75/100grade B

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Safety scan

B75/100

full report

Adoption

Growing

42 stars161 downloads/wk

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Parallel Browser MCP tools (26, 2 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 by selector.
browser_dom_query
Query element presence, count, and state without waiting.
browser_drag
Drag from one element to another.
browser_evaluatewrite action
Run JavaScript in the page context.
browser_fill
Fill a field with text.
browser_fill_form
Fill multiple form fields.
browser_generate_locator
Generate locator suggestions for an element.
browser_get_page_structure
Return a readable page structure summary.
browser_go_back
Go back in browser history.
browser_hover
Hover over an element by selector.
browser_keyboard_press
Press a keyboard key or key chord.
browser_keyboard_type
Type text into the active page.
browser_mouse_click_xy
Click at viewport coordinates.
browser_mouse_drag
Drag the mouse from one point to another.
browser_mouse_move
Move the mouse to viewport coordinates.
browser_navigate
Navigate the session page to a URL.
browser_screenshot
Capture a screenshot of the current page.
browser_select_option
Select options in a select element.
browser_snapshot
Return a structured page snapshot.
browser_upload_filewrite action
Upload files to a file input.
browser_wait_for_selector
Wait for a selector to reach a state.
browser_wait_for_timeout
Wait a fixed number of milliseconds.
close_all_sessions
Close all active browser sessions.
close_session
Close a browser session by numeric session ID.
get_sessions
List all active browser sessions.
start_session
Start a browser session using the configured provider.

Public scan report

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

1 medium

Code scan41 source files scanned20/25
–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 17 days ago15/15
Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Findings (1)

mediumeval / new Function usedexec.eval

dist/tools/browser/registerBrowserTools.js: …) => { const callback = new Function(expression); return call…

Overall 75/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

How Parallel Browser MCP compares

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

Safety score: 75/100; higher than 45% of 866 Scraping and browsing servers
Tools: 26; 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: 42; more than 89% of 583 Scraping and browsing servers
Downloads a week: 161; more than 66% of 309 Scraping and browsing servers with a package

What its tools let an agent do: 21 read · 4 change · 1 run or deploy

Install Parallel Browser MCP in Claude Code, Cursor or VS Code

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

claude mcp add parallel-browser-mcp -- npx -y parallel-browser-mcp

Add to Cursor

What the publisher says

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

parallel-browser-mcp

parallel-browser-mcp is an MCP server for parallel browser automation. It exposes a numeric session model over MCP so one client can create and control multiple browser sessions at the same time across multiple browser providers.

Supported providers:

playwright for local Chromium
browserbase via @browserbasehq/sdk
anchor via anchorbrowser
cloudflare via Cloudflare Browser Run

Each browser session gets a numeric ID like 1, 2, 3, and every browser_* tool accepts a sessionId.

Features

Multiple concurrent browser sessions in memory
Provider abstraction shared across Browserbase, Anchor Browser, Cloudflare Browser Run, and local Playwright
MCP session tools:
start_session
close_session
closeallsessions
get_sessions
Browser tools:
browser_navigate
browsergoback
browser_click
browser_fill

Quick Start

corepack pnpm install
corepack pnpm build

Run locally over stdio:

node dist/index.js

Run it as an npm package CLI:

npx parallel-browser-mcp@latest

Configuration

Provider-specific settings are configured at the MCP server configuration level, not per tool call.

The server reads config in this order:

BROWSERMCPCONFIG
BROWSERMCPCONFIG_PATH
direct env defaults
built-in defaults

Recommended config shape:

{
  "defaultProvider": "playwright",
  "providers": {
    "browserbase": {
      "projectId": "proj_123",
      "keepAlive": true
    },
    "anchor": {
      "recording": false
    },
    "playwright": {
      "launchOptions": {
        "headless": true
      },
      "useCloakBrowser": false
    }
  }
}

Stealth Chromium via CloakBrowser

The playwright provider can optionally launch CloakBrowser instead of vanilla Chromium for sessions that need to bypass bot detection. Enable it per-config or via env:

{
  "providers": {
    "playwright": { "useCloakBrowser": true }
  }
}

PLAYWRIGHT_USE_CLOAKBROWSER=true

cloakbrowser is an optional peer — install it only when you need stealth:

npm install cloakbrowser

The CloakBrowser binary (~200MB stealth Chromium) is downloaded automatically on the first session launch. Existing launchOptions / contextOptions continue to apply, and the rest of the provider behaves identically to standard Playwright.

Required credentials by provider:

playwright: none
browserbase: BROWSERBASEAPIKEY, plus a projectId in config or BROWSERBASEPROJECTID
anchor: ANCHORAPIKEY
cloudflare: CLOUDFLAREAPITOKEN, CLOUDFLAREACCOUNTID

Optional env defaults:

BROWSERBASEPROJECTID
BROWSERBASEKEEPALIVE
BROWSERBASECONTEXTID
BROWSERBASE_PERSIST
PLAYWRIGHTSTORAGESTATE_PATH
PLAYWRIGHTEXECUTABLEPATH
PLAYWRIGHT_CHANNEL
PLAYWRIGHTUSECLOAKBROWSER (true to launch stealth Chromium via CloakBrowser; requires npm install cloakbrowser)

Installation

Use the standard config below in any MCP client that supports stdio:

Shortened. The full README is on GitHub.

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

Parallel Browser MCP: common questions

Is Parallel Browser MCP server safe?: Mostly: it is graded B (75/100). Read the Parallel Browser MCP safety report
How do I install Parallel Browser MCP?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Parallel Browser MCP need an API key?: Yes. The registry entry asks for BROWSERBASE_API_KEY, ANCHOR_API_KEY, CLOUDFLARE_API_TOKEN.
Is Parallel Browser MCP maintained?: The last commit was 55 days ago (2026-09-10). The latest release is v0.1.14.
What can I use instead of Parallel Browser MCP?: Servers from other publishers that do the same job: Browser Gateway MCP server, One Search MCP server and vibatchium MCP server. Compare all Parallel Browser MCP alternatives.
How does Parallel Browser MCP compare with other Scraping and browsing MCP servers?: safety score 75/100 (higher than 45% of 866 Scraping and browsing servers); tools 26 (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 Parallel Browser MCP

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

All Parallel Browser MCP alternatives →

Browser Gateway
AI browser tools with Chrome CDP. Navigate, screenshot, interact. Multi-provider failover.
not reviewed
Growing
B
One Search
Web search, URL discovery, scraping & extraction with agent-browser and search providers
not reviewed
Growing
B
vibatchium
Stealth browser automation for AI agents — real Chrome, N parallel persistent logged-in sessions.
not reviewed
Growing
A
GrowBlocks Dev Kit
Build, play-test with screenshots, and ship three.js browser games on GrowBlocks.
5.0(1)
New
A
SeleniumBase MCP
Stealthy browser automation, testing, and web-scraping via CDP Mode.
not reviewed
Widely used
A

Run it through the gateway

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

Rating: —
Safety grade: B · 75/100
Stars: 42
Downloads/wk: 161
Price: Free
Licence: Apache-2.0
Transport: Local · npm
Version: 0.1.14
Category: Scraping and browsing
Last release: 2026-09-10

Credentials it needs

BROWSER_MCP_CONFIGInline JSON configuration for providers and defaults. See README for shape.
BROWSER_MCP_CONFIG_PATHPath to a JSON file with provider configuration.
BROWSERBASE_API_KEYsecretBrowserbase API key (required when using the browserbase provider).
BROWSERBASE_PROJECT_IDBrowserbase project ID (required when using the browserbase provider, unless set in config).
ANCHOR_API_KEYsecretAnchor Browser API key (required when using the anchor provider).
CLOUDFLARE_API_TOKENsecretCloudflare API token (required when using the cloudflare provider).
CLOUDFLARE_ACCOUNT_IDCloudflare account ID (required when using the cloudflare provider).
PLAYWRIGHT_USE_CLOAKBROWSERSet to 'true' to launch the local Playwright provider via CloakBrowser (https://cloakbrowser.dev/) stealth Chromium. Requires installing the optional 'cloakbrowser' npm package.

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