Alterlab MCP Server

by alterlab Your server? Claim it

answering

Alterlab is answering right now. Last checked 1 min ago. 178 installs a week from npm. Last commit 30 Oct 2026.

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

Installs per day peak 36 · avg 17 · +46% w/w

a month agotoday

Uptime history 68 hours of history

68 hours agonow

100.0%

Uptime 24h

92 of 92 checks

—

Tools

hidden behind auth

169 ms

Response time

average over 24h

178

Installs / week

npm and PyPI

What the code does

We read the source, 2 d ago · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Runs an external command src/auth.ts:139

  execFile(bin, args, () => {

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 1 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mcp-server --transport http https://mcp.alterlab.io/mcp

Settings → Connectors → Add custom connector, then paste this address

https://mcp.alterlab.io/mcp

~/.codex/config.toml

[mcp_servers.mcp-server]
url = "https://mcp.alterlab.io/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "mcp-server": {
      "url": "https://mcp.alterlab.io/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "mcp-server": {
      "type": "http",
      "url": "https://mcp.alterlab.io/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.alterlab.io/mcp	streamable-http	sign-in	152 ms	1 min ago

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Alterlab — questions

Answers built from our own checks of this server.

Why is there no tool list for Alterlab?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.

Is Alterlab working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 169 ms. The bar chart above shows every period we have measured.

How do I connect Alterlab?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.

How do you sign in to Alterlab?

No API key is involved. Alterlab answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.

How fast is Alterlab?

It answers our handshake in 169 ms on average, which is faster than 79% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use Alterlab?

The npm package alterlab-mcp-server was installed 178 times in the last week. Week over week that is +46%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Alterlab open source?

The code is open source: it is published under the MIT licence, written in TypeScript, 2 stars on GitHub and 26 open issues. The licence covers the code in the repository, not the hosted service at mcp.alterlab.io, which runs on its operator's own terms.