Wayback-diff + weighted SEO audit: two new sub-cent x402 URL endpoints

Two new sub-cent x402 endpoints shipped on epson-rpm-america-satisfy.trycloudflare.com (Base mainnet, USDC).

GET /api/wayback-diff?url=URL — $0.0005 — content-stability + drift detection via Wayback Machine snapshot.

GET /api/seo-audit?url=URL — $0.0005 — weighted 12-check SEO meta audit with A-F grade + recommendations.

Both part of the 41-route URL Metadata API suite. All indexed on 402index.io live. Discovery: /.well-known/x402.