Is Server safe to use?

Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install Server?

Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What AI clients work with Server?

Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is Server actively maintained?

Server is actively maintained — last commit was 1 day ago.

Server

alterlab-mcp-server

Web scraping MCP server — scrape, extract structured data, screenshot any site with anti-bot bypass.

67/wk 0 tools GitHub npm

No known CVEs

No license

Actively maintained

Last commit 1d ago

Works with most clients

Transport: stdio, sse, http

0 tools

Grade F

Edit this pageView history

Browser

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "alterlab": {
      "env": {
        "ALTERLAB_API_KEY": "sk_live_your_key_here"
      },
      "args": [
        "-y",
        "alterlab-mcp-server"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-alterlab-mcp-server)](https://mcppedia.org/s/io-alterlab-mcp-server)

Read me

What Server does

claude mcp add alterlab -- npx -y alterlab-mcp-server

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'alterlab-mcp-server' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

54/100across 5 weighted dimensions

How we score →

0255075100

−46

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked alterlab-mcp-server against OSV.dev.

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Server safe to use?: Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install Server?: Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with Server?: Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Server actively maintained?: Server is actively maintained — last commit was 1 day ago.

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MCP Security Weekly

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Community

Discussion

Start a conversation

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Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

Browser

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "alterlab": {
      "env": {
        "ALTERLAB_API_KEY": "sk_live_your_key_here"
      },
      "args": [
        "-y",
        "alterlab-mcp-server"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-alterlab-mcp-server)](https://mcppedia.org/s/io-alterlab-mcp-server)

Read me

What Server does

claude mcp add alterlab -- npx -y alterlab-mcp-server

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'alterlab-mcp-server' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

AlterLab MCP Server

Give Claude, Cursor, and Windsurf the ability to scrape any website, extract structured data, and take screenshots — with automatic anti-bot bypass.

Get Started Free → $1 free balance on signup — up to 5,000 scrapes.

One-Line Install

Claude Code

claude mcp add alterlab -- npx -y alterlab-mcp-server

Then set your API key: export ALTERLAB_API_KEY=sk_live_... or add it to .claude.json (see full setup below).

Cursor

# Add to .cursor/mcp.json — see full config below

Smithery

npx -y @smithery/cli install alterlab-mcp-server --client claude

Why AlterLab Instead of WebFetch or Browser MCP?

Claude's built-in WebFetch tool and open-source browser MCP servers fail on most real-world websites. They cannot bypass Cloudflare, render JavaScript SPAs, or extract structured data.

AlterLab replaces broken fetch tools with one MCP server that actually works:

Capability	WebFetch / fetch()	Browser MCP	AlterLab MCP
Anti-bot bypass (Cloudflare, DataDome, Akamai)	No	Partial	Yes — automatic
JavaScript rendering (React, Angular, Vue SPAs)	No	Yes (slow)	Yes — headless Chromium
Structured data extraction (JSON, Schema.org)	No	No	Yes — built-in profiles
Smart tier escalation (cheapest method first)	N/A	N/A	Yes — saves 60-80%
Residential proxy rotation (195+ countries)	No	No	Yes
Screenshot and PDF capture	No	Screenshot only	Yes — both
OCR text extraction from images	No	No	Yes
Cost per request	Free (but fails)	Free (but slow)	From $0.0002

How Does AlterLab Web Scraping Work?

AlterLab uses a multi-tier scraping architecture. It automatically selects the cheapest method capable of fetching each URL:

Curl ($0.0002/req) — Direct HTTP for static pages, RSS feeds, public APIs
HTTP ($0.0003/req) — TLS fingerprint rotation for moderately protected sites
Stealth ($0.0005/req) — Browser impersonation for Cloudflare/DataDome-protected sites
Light JS ($0.0007/req) — Lightweight JS extraction from server-rendered HTML
Browser ($0.001/req) — Full headless Chromium for JavaScript-heavy SPAs

Auto mode starts at Tier 1 and escalates only when blocked. Most websites resolve at Tiers 1-2, so $1 gets you 1,000 to 5,000 scrapes depending on the sites you target.

Installation

Install in Claude Desktop / Claude Code

Add to your Claude config file (~/.claude.json for Claude Code, or Settings for Claude Desktop):

{
  "mcpServers": {
    "alterlab": {
      "command": "npx",
      "args": ["-y", "alterlab-mcp-server"],
      "env": {
        "ALTERLAB_API_KEY": "sk_live_your_key_here"
      }
    }
  }
}

Install in Cursor

Add to .cursor/mcp.json in your project root:

{
  "mcpServers": {
    "alterlab": {

... [View full README on GitHub](https://github.com/RapierCraft/alterlab-mcp-server#readme)

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

54/100across 5 weighted dimensions

How we score →

0255075100

−46

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked alterlab-mcp-server against OSV.dev.

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Server safe to use?: Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install Server?: Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with Server?: Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Server actively maintained?: Server is actively maintained — last commit was 1 day ago.