{"service":"Secret Patterns Studio: exact math-art SVG masters","how":"GET /v1/catalog (free) to browse. GET /v1/plate/{id}/preview (free, watermarked PNG). GET /v1/plate/{id}/svg ($0.25 USDC on Base via x402) for the full SVG master + commercial licence.","plates":25,"seller":"Secret Patterns Studio (seller of record)","settlement":"USDC settles on-chain directly to the seller's configured address. Payments are not recorded in Stripe by this endpoint; the Stripe recording layer has not been built yet.","refunds":"If a delivered file is defective or undeliverable, email secretpatterns@muse.ai with the transaction hash within 7 days of settlement for a manual on-chain refund. Settlement is on-chain in USDC; there is no card or Stripe refund flow for this endpoint. A completed refund terminates this licence."}