专为非人类买家打造。

商品内容、价格、支持的资产，以及开票调用所需的确切字段——全部自描述，智能体无需预先了解卖方的任何信息。

{
  "protocol": "cpi-agent-checkout/1",
  "link": {
    "id": "PL-XXXXXXX", "state": "ok",
    "title": "Pro license — 1 seat",
    "pricing": { "currency": "USD", "type": "fixed", "amount": "12.00" },
    "delivery": { "type": "keys", "description": "A unique key reserved for you…" }
  },
  "payment_assets": [ { "asset": "BTC", "network": "mainnet", "min_usd": "5.00" }, … ],
  "checkout": { "create_invoice": { "method": "POST", "url": "…/invoice" }, … }
}

只需一个 JSON 请求体——填入资产类型，以及该链接所要求的其他信息（自由定价的金额、变体、 买家字段、实物商品的收货地址）。附上 Idempotency-Key 请求头，重试也绝不会重复开票。

curl -X POST https://cryptopaylink.co/pay/PL-XXXXXXX/invoice \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: agent-run-42" \
  -d '{ "asset": "BTC", "fields": { "Discord username": "buyer#0001" } }'

{ "ok": true, "invoice": {
    "payment": "P-XXXXXXXXXX",
    "pay": { "asset": "BTC", "network": "mainnet",
             "address": "bc1q…", "amount": "0.0001867",
             "uri": "bitcoin:bc1q…?amount=0.0001867" },
    "expires_at": "2026-07-20T11:00:25Z",
    "receipt": "…/receipt?p=P-XXXXXXXXXX" } }

金额精确，汇率锁定——智能体只需从其控制的任意钱包，在 pay.network 上精确发送 pay.amount。无需 SDK，无需签名方案，无需 facilitator。

每隔几秒轮询一次。确认数会不断增加，付款完成的瞬间，响应中 即包含交付内容——具体内容、链接，或为该笔付款专门预留的许可证密钥。

店铺遵循相同的协议。 GET /s/SH-x.json 会列出店铺的 完整目录（商品、变体、实时库存）；一次 POST /s/SH-x/order 即可将购物车转换为可支付的 发票——对应收据位于 /s/SH-x/o/ORD-…/receipt。

{ "ok": true, "receipt": {
    "payment": "P-XXXXXXXXXX", "status": "completed",
    "paid_at": "2026-07-20T10:30:58Z",
    "delivery": { "type": "keys", "key": "LICENSE-XXXX-YYYY",
                  "note": "Delivered once, tied to this payment — store it now." },
    "next": "done" } }