x402

Use when the user wants to discover or call a paid API hosted on an x402 Hub instance. The hub exposes a JSON catalogue at /api/listings and each listing is reachable at /paid/<id>, which requires payment via the x402-payment skill.

Pay x402-compatible URLs by opening a local browser page for MetaMask signing. Use when a URL returns HTTP 402 or when you know a URL requires x402 payment.