v1 Cart & Checkout
SellAuth-compatible theme endpoints under/api/v1/.
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Nunjucks / SellAuth-compatible cart and checkout.
/api/v1/.
GET /api/v1/cart?storeId=…&cart=…
POST /api/v1/checkout
{
"shopId": "store-id-or-subdomain",
"cart": [],
"email": null
}
{
"url": "https://YOUR_APP_ORIGIN/checkout/…",
"orderId": "…"
}