{
  "what": "Buy a Twelve Permissions seal with USDC over x402 (HTTP 402). The NFT itself lives on XRP Ledger mainnet; after payment settles, a 0-XRP transfer offer directed to YOUR XRPL address is created within ~30 minutes.",
  "networks_accepted": [
    {
      "network": "base-sepolia",
      "note": "Base Sepolia (TESTNET — full payment flow works with test USDC, but NO real seal is delivered and the piece is not reserved; use it to verify your client)"
    },
    {
      "network": "base",
      "note": "Base mainnet"
    }
  ],
  "mainnet_status": "LIVE",
  "authorization_protocol": "Required. Pass authorized_by=<who authorized you and how, in plain words>. This collection only sells to agents whose principal authorized the spend — the memo becomes part of the permanent record, echoed into the XRPL delivery offer. Compatible in spirit with x401 authority credentials.",
  "requirements": "You need an XRP Ledger address to RECEIVE the seal (the xrpl= parameter). x402 lowers the payment barrier, not the ownership barrier.",
  "native_alternative": "Native path: buy directly on the XRP Ledger via the listed sell offers (see /agents and the MCP server at /mcp). Note you will still need an XRPL account either way — holding a seal requires roughly 1.2 XRP in reserve, which is why this USDC path is now priced below the native one.",
  "pieces": [
    {
      "id": "01",
      "name": "Twelve Permissions #01 — THE WALLET",
      "image": "https://twelve-permissions.tsharpe.workers.dev/01.png",
      "available": true,
      "price_usd": 59,
      "price_xrp_native": 48,
      "buy": "https://twelvepermissions.com/x402/buy/01?xrpl=<your-xrpl-address>&authorized_by=<who authorized this spend>"
    },
    {
      "id": "02",
      "name": "Twelve Permissions #02 — REAL CARDS WORK",
      "image": "https://twelve-permissions.tsharpe.workers.dev/02.png",
      "available": true,
      "price_usd": 9,
      "price_xrp_native": 12,
      "buy": "https://twelvepermissions.com/x402/buy/02?xrpl=<your-xrpl-address>&authorized_by=<who authorized this spend>"
    },
    {
      "id": "03",
      "name": "Twelve Permissions #03 — THE RED LINE",
      "image": "https://twelve-permissions.tsharpe.workers.dev/03.png",
      "available": true,
      "price_usd": 9,
      "price_xrp_native": 12,
      "buy": "https://twelvepermissions.com/x402/buy/03?xrpl=<your-xrpl-address>&authorized_by=<who authorized this spend>"
    },
    {
      "id": "04",
      "name": "Twelve Permissions #04 — TEN STREAMS",
      "image": "https://twelve-permissions.tsharpe.workers.dev/04.png",
      "available": true,
      "price_usd": 9,
      "price_xrp_native": 12,
      "buy": "https://twelvepermissions.com/x402/buy/04?xrpl=<your-xrpl-address>&authorized_by=<who authorized this spend>"
    },
    {
      "id": "05",
      "name": "Twelve Permissions #05 — THE HANDOFF",
      "image": "https://twelve-permissions.tsharpe.workers.dev/05.png",
      "available": true,
      "price_usd": 9,
      "price_xrp_native": 12,
      "buy": "https://twelvepermissions.com/x402/buy/05?xrpl=<your-xrpl-address>&authorized_by=<who authorized this spend>"
    },
    {
      "id": "06",
      "name": "Twelve Permissions #06 — THE DOG WHISTLE",
      "image": "https://twelve-permissions.tsharpe.workers.dev/06.png",
      "available": true,
      "price_usd": 9,
      "price_xrp_native": 12,
      "buy": "https://twelvepermissions.com/x402/buy/06?xrpl=<your-xrpl-address>&authorized_by=<who authorized this spend>"
    },
    {
      "id": "07",
      "name": "Twelve Permissions #07 — THE MONEY CHANGER",
      "image": "https://twelve-permissions.tsharpe.workers.dev/07.png",
      "available": true,
      "price_usd": 9,
      "price_xrp_native": 12,
      "buy": "https://twelvepermissions.com/x402/buy/07?xrpl=<your-xrpl-address>&authorized_by=<who authorized this spend>"
    }
  ],
  "claim_status": "https://twelvepermissions.com/x402/claim/{claim_id}"
}