x402-ivory.vercel.app is a compact Identity & Authentication provider that exposes a single /api/protected-content endpoint to deliver gated content behind an authentication check. It’s designed for implementing or testing access control and auth workflows in prototypes, demos, or lightweight production integrations. Hosted on the 'base' network and offered at a flat listed price of $0.10, it’s useful when you need a focused protected-content endpoint without extra complexity.