Gives Claude a single tool to extract structured schema.org/Product JSON from any URL. Each call costs $0.01 USDC paid via x402 from a Base Sepolia wallet you configure with a private key. The server forwards your payment and URL to a hosted endpoint running Playwright and Claude Haiku, which renders the page and returns name, price, currency, availability, variants, and images. Works well on Bandcamp, Shopify, and simpler sites. Fails on Amazon, Walmart, and other aggressive anti-bot targets. You fund a throwaway wallet with testnet ETH for gas and testnet USDC for calls, then point Claude Desktop at it via npx. No API keys or subscriptions, just per-call tolls.
claude mcp add --transport stdio io.github.ultrastarz-x402-extract uvx x402-extract