MCP server for web scraping and AI agents

The QuantumProxies.io MCP server gives Claude, Cursor and any MCP client 28 tools to scrape, search, map and crawl the live web through residential proxies. Add https://api.quantumproxies.io/mcp to a client that supports OAuth sign-in, sign in to your account and click Allow access. No API key to copy.

Connect with OAuth in four steps

For MCP clients that support OAuth sign-in, the authorization flow defined in the MCP specification.

  1. Add the server URL: Paste https://api.quantumproxies.io/mcp into your client, for example as a custom connector in Claude.
  2. Sign in: The client opens the QuantumProxies.io sign-in page. Log in, or create a free account.
  3. Allow access: A consent screen asks you to confirm. Click Allow access and the client is connected.
  4. Ask your agent: The 28 tools are available right away. Usage is billed to your account balance, like any API key.

Each connection gets its own API key, named MCP · <client name>, on the API keys page of your dashboard. Delete that key and the client is disconnected.

OAuth or API key?

Both reach the same endpoint and the same 28 tools.

OAuth sign-in

For chat apps and desktop clients. Nothing to copy or store: the client holds short-lived tokens, and every connection appears as its own key that you can delete.

API key

For scripts, CI and headless agents, and for the local npx package. Send a qp_live_ key as Authorization: Bearer or X-Api-Key to the hosted endpoint, or set QUANTUMPROXIES_API_KEY for the local server.

Skills for AI agents

Five SKILL.md files teach Claude Code, Claude.ai, Codex, Cursor, Gemini CLI and any agent that reads the open Agent Skills format how to use QuantumProxies.io correctly. Install them once; the agent loads the right one when the task needs it.

Install with one command: npx skills add https://quantumproxies.io. Works with the skills CLI in 70+ agents. Claude Code also loads a skill folder copied into ~/.claude/skills; Codex, Cursor and Gemini CLI read ~/.agents/skills.

Discovery index (/.well-known/agent-skills/) · Source and Claude Code plugin on GitHub

The hosted endpoint follows the authorization part of the MCP specification: it is an OAuth 2.1 protected resource, and a request without credentials gets a 401 response that tells the client where to sign in. Keys still work on the same URL, so nothing breaks for existing setups.

Remote MCP server URL and discovery

The hosted server lives at https://api.quantumproxies.io/mcp and speaks Streamable HTTP. It publishes OAuth protected resource metadata (RFC 9728) at https://api.quantumproxies.io/.well-known/oauth-protected-resource/mcp, which names https://app.quantumproxies.io as the authorization server. That server publishes its own metadata (RFC 8414) at /.well-known/oauth-authorization-server. A client that implements MCP authorization finds all of this on its own, starting from the 401 response.

How the OAuth 2.1 sign-in is secured

PKCE with the S256 method is required on every authorization. Clients can register through Dynamic Client Registration (RFC 7591) or identify themselves with a Client ID Metadata Document. Access tokens last one hour; refresh tokens last 30 days and rotate on every use. Tokens are bound to the MCP endpoint with resource indicators (RFC 8707) and are never forwarded to other services.

Manage and disconnect clients

Every client you allow gets a dedicated API key named MCP · <client name> on the API keys page of your dashboard. Its usage is billed to your account balance, like any other API key. Delete the key and that client is disconnected, while your other clients and keys keep working.

Connect with an API key instead

API keys keep working on the same endpoint: send a qp_live_ key as Authorization: Bearer or in the X-Api-Key header. The local package, npx -y quantumproxies-mcp, runs over stdio on your machine and reads the key from the QUANTUMPROXIES_API_KEY environment variable. Use a key wherever there is no browser to sign in: scripts, CI and headless agents.

28 tools your agent gets

Search, read, crawl and turn the live web into source-backed context or validated rows. Long-running tools expose status calls, so agents can poll without downloading the same data twice.

Frequently Asked Questions

What is the QuantumProxies.io MCP server?

It is a free Model Context Protocol server that connects the QuantumProxies.io Scraper API to Claude, Cursor and any MCP client. Your agent gets 28 tools to scrape, search, map and crawl the web through residential proxies with real-browser TLS fingerprints. Use the hosted endpoint with OAuth sign-in or run the npx package locally.

Does the MCP server support OAuth?

Yes. The hosted endpoint at https://api.quantumproxies.io/mcp supports OAuth 2.1 sign-in as defined in the MCP authorization specification. Add the URL to a client that supports OAuth sign-in, log in to QuantumProxies.io and click Allow access. PKCE is required, access tokens last one hour and refresh tokens rotate.

How do I connect the MCP server to Claude?

In Claude, add https://api.quantumproxies.io/mcp as a custom connector and sign in when the QuantumProxies.io page opens. In Claude Code, run claude mcp add --transport http quantumproxies https://api.quantumproxies.io/mcp, then /mcp to sign in. Claude Desktop can also run the local npx package with an API key.

How do I disconnect a client?

Open the API keys page of your dashboard. Every client connected with OAuth has its own key, named MCP · <client name>. Delete that key and the client loses access; your other clients and API keys are not affected. To connect it again, add the server URL and sign in once more.

Can I still use an API key?

Yes. Send a qp_live_ key as Authorization: Bearer or X-Api-Key to https://api.quantumproxies.io/mcp, or run the local package with npx -y quantumproxies-mcp and the QUANTUMPROXIES_API_KEY environment variable. A key is the simpler choice for scripts, CI and headless agents, where there is no browser to sign in.

How much does it cost?

The MCP server itself is free. You only pay standard pay-as-you-go pricing for the API calls it makes, the same rates as calling the Scraper API directly, billed to your account balance whether you connect with OAuth or a key. New accounts get free credits to test, no credit card required.

Is there a remote MCP server, or only the local package?

Both. The hosted endpoint at https://api.quantumproxies.io/mcp speaks Streamable HTTP for clients that prefer a URL, with OAuth sign-in or an API key, and exposes the same 28 tools. The npx package runs on your machine over stdio and authenticates with your API key.

Where does it run? Do you see my data?

The local package runs on your machine via npx and talks to the public QuantumProxies.io API with your own qp_live_ key: no internal secrets in the package and no extra hop. The hosted endpoint makes the same API calls with the key tied to your connection; OAuth tokens are never forwarded to other services.

Which MCP clients are supported?

Any client that speaks the Model Context Protocol. Clients that connect to remote servers over Streamable HTTP and support OAuth sign-in use the hosted URL; stdio clients such as Claude Desktop, Claude Code, Cursor, Windsurf, VS Code and Zed can run the local package with the same five-line JSON.

What tools does my agent get?

Twenty-eight tools: scrape, unlock, seo_audit, ai_visibility, search, search_and_read, map, crawl and batch with status polling, search_bulk and create_dataset with their status tools, generate_parser with four self-healing preset tools, three Collector tools over the ready-made scrapers, four proxy tools for endpoints, geo targeting and IP whitelists, and report to send feedback to the team.

Why not let the agent fetch pages itself?

Plain HTTP fetches from an agent get blocked by anti-bot systems on exactly the pages worth reading. The MCP server routes every request through residential IPs with browser-grade TLS fingerprints, automatic retry on block and a stealth browser fallback, so the agent reads the real page, not a captcha.

Related products

Sources

If you're an AI agent

Skip the marketing. QuantumProxies.io publishes a machine-readable site map, Markdown for every page, a free MCP server, and APIs billed from the same balance as your proxies.

Connect in one command: npx -y quantumproxies-mcp