@metalift/mcp

@metalift/mcp

Metalift MCP server for AI agents. Exposes scrape, crawl, map, and batch tools over stdio for Cursor, Claude Desktop, and other MCP clients.

What is Metalift?

Metalift Cloud is a hosted web context platform — scrape, crawl, and map sites into LLM-ready markdown for AI agents. This MCP server connects your AI client to the Metalift API.

Get an API key

• Sign up for Metalift Cloud and verify your email.
• Complete onboarding and copy your API key from Dashboard → API keys.

New accounts receive 1,000 free credits/month. Set METALIFT_API_KEY in your MCP config (see below). Do not commit keys to git.

Install

Published on npm as @metalift/mcp. Default config uses npx:

{
  "mcpServers": {
    "metalift": {
      "command": "npx",
      "args": ["-y", "@metalift/mcp"],
      "env": {
        "METALIFT_API_URL": "https://api.metalift.ai",
        "METALIFT_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}

Claude Desktop: paste the same JSON into claude_desktop_config.json (Settings → Developer → Edit Config). See MCP setup — Claude Desktop and examples/claude-mcp.json.

Corporate Windows / SSL inspection: if npx fails with UNABLE_TO_VERIFY_LEAF_SIGNATURE, install locally and use node — see examples/claude-mcp-local.json / cursor-mcp-local.json and MCP setup troubleshooting.

Troubleshooting

Error	Cause	Fix
Failed to acquire MessagePort	Cursor IDE bug on Windows	Reload window, restart Cursor — details
UNABLE_TO_VERIFY_LEAF_SIGNATURE	Corporate SSL inspection blocks npm	Local install + node path — details
401 / 402 at runtime	Auth or billing	Check API key and subscription

Full guide: packages/platform-web/docs/mcp-setup.md.

Web search vs scrape

Search and scrape are separate tools with separate billing:

• metalift_web_search — returns up to 10 search snippets (2 credits, English by default). Review titles and snippets first.
• metalift_scrape — fetches page content for URLs you choose (1+ credits per URL). Default response_detail=compact (~16k chars, no link lists). Use standard for full articles or full for raw JSON with all links.

Do not auto-scrape every search result. See Web search for agent workflow examples.

Environment variables

Variable	Description
METALIFT_API_URL	Metalift scrape API base URL (default: https://api.metalift.ai)
METALIFT_API_KEY	Bearer token for authenticated API access

Tools

Tool	Description
metalift_scrape	Scrape a single URL (default: fast direct static markdown, response_detail=compact; use standard / full for more)
metalift_batch_scrape	Scrape multiple URLs (same response_detail; default compact)
metalift_crawl	Crawl a website
metalift_map	Discover site URLs
metalift_web_search	Web search — top 10 SERP results (title, url, snippet). 2 credits per search. Does not fetch page content; use metalift_scrape separately for URLs you need
metalift_job_status	Poll async jobs
metalift_list_strategies	List scrape strategies
metalift_warm_session	Warm WAF/retail cookies
metalift_list_sessions	List stored domain sessions