CASCADE — legacy surface

This page previously described an older RLUSD/XRPL payment path and 402Proof invoice flow. Those are not current ScriptMasterLabs payment authority and have been retired from this public surface.

Current machine-payment authority: x402 v2 · Base mainnet eip155:8453 · USDC · fresh HTTP 402 terms from the live endpoint.

Use the AI Agent API Evidence hub for current product boundaries and live contracts, x402 ECHO for retained ecosystem observations, or the current MCP stack for active tools.