{"name":"MandateRail demo-api","endpoints":{"health":"GET /health","unpaidExample":"GET /paid/resource (no headers → 402)","registerMandate":"POST /demo/mandates","getMandate":"GET /demo/mandates/:id","preview402":"GET /402-preview","listReceipts":"GET /receipts","getReceipt":"GET /receipts/:receiptId"},"notes":{"merchant":"MERCHANT_ADDRESS is receive-only payTo; ALGORAND_MNEMONIC is the payer (scripts)"}}