# Create cart URL: https://docs.hanzo.ai/docs/openapi/commerce/opencart > Opens an empty cart for a shopper to fill, and answers it with its new id. `POST /v1/commerce/cart` > [Commerce →](https://docs.hanzo.ai/docs/openapi/commerce) · [All API references →](https://docs.hanzo.ai/docs/openapi) · [Get started →](https://docs.hanzo.ai/docs/guides) | | | | ------------- | --------------------------------------- | | **Address** | `https://api.hanzo.ai/v1/commerce/cart` | | **Method** | `POST` | | **Operation** | `openCart` | | **Auth** | `Authorization: Bearer $HANZO_API_KEY` | Opens an empty cart for a shopper to fill, and answers it with its new id. This is the first step of a sale: hold the id, add items to it with setCartItem, then hand it to checkout. Every field of the request is optional — an empty body opens a perfectly good anonymous cart — and the fields exist only to pre-fill what is already known about the shopper. The STORE defaults to the org's own default storefront, so a merchant selling through one storefront never has to name it. The CURRENCY defaults to usd; note that checkout overrides it with the store's own currency when the sale is authorized, so a currency set here is a hint rather than a commitment. The cart is created in the CALLER'S OWN org namespace, taken from the validated principal and never from the body, so a cart can never be opened on another tenant's books. A named handler, not a closure, so zipdoc can lift this prose into the registry. ## Request 4 fields, body `application/json` (required). | Field | In | Type | Required | Description | | ---------- | ---- | ------ | -------- | ----------------------------------------------------------------------------------------- | | `currency` | body | string | — | Currency is the ISO 4217 code the cart is priced in, lower-cased. | | `email` | body | string | — | Email is the shopper's address, for a cart that belongs to someone who has not signed in. | | `store` | body | string | — | Store is the storefront this cart is being filled on. | | `user` | body | string | — | User is the id of the signed-in shopper this cart belongs to, when there is one. | ## Response | Status | Body | Meaning | | --------- | --------------- | ------- | | `201` | Cart | created | | `default` | problem-details | refused | `201` body — 23 fields. | Field | In | Type | Always | Description | | -------------------- | ---- | --------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------- | | `createdAt` | body | string | — | CreatedAt is when the cart was opened, RFC3339. | | `currency` | body | string | — | Currency is the ISO 4217 code every amount below is denominated in. | | `discountCents` | body | integer (int64) | — | DiscountCents is what coupons and promotions took off, in whole cents. | | `email` | body | string | — | Email is the shopper's address, when the cart carries one. | | `id` | body | string | — | ID is the cart's id — what every other cart op addresses it by, and what a storefront persists against the browser session. | | `items` | body | CartItem\[] | — | Items are the cart's lines, in the order they were added. | | `items[].free` | body | boolean | — | Free reports a line that costs nothing because a coupon or a promotion made it so, rather than because its price is zero. | | `items[].id` | body | string | — | ID is the line's identity — the variant id when the line is a variant, otherwise the product id. | | `items[].kind` | body | string | — | Kind is "variant" when this line is a specific sellable variant and "product" when it is the product itself. | | `items[].name` | body | string | — | Name is the item's display name, cached onto the line when it was added so a cart renders without a second read. | | `items[].priceCents` | body | integer (int64) | — | PriceCents is the unit price in whole cents, cached at the moment the line was added. | | `items[].quantity` | body | integer (int64) | — | Quantity is how many units of this item the cart holds. | | `items[].sku` | body | string | — | SKU is the line's stock-keeping unit — the variant's when it has one, otherwise the product's. | | `lineTotalCents` | body | integer (int64) | — | LineTotalCents is the sum of the lines before any discount, in whole cents. | | `order` | body | string | — | Order is the order this cart became, once checkout completed it. | | `shippingCents` | body | integer (int64) | — | ShippingCents is the shipping charge, in whole cents. | | `status` | body | string | — | Status is "active" for a cart still being filled, "ordered" once checkout turned it into an order, and "discarded" when the shopper abandoned it. | | `store` | body | string | — | Store is the storefront the cart is being filled on. | | `subtotalCents` | body | integer (int64) | — | SubtotalCents is LineTotalCents less DiscountCents, in whole cents. | | `taxCents` | body | integer (int64) | — | TaxCents is the sales tax, in whole cents. | | `totalCents` | body | integer (int64) | — | TotalCents is what the shopper pays: subtotal plus shipping plus tax, in whole cents. | | `updatedAt` | body | string | — | UpdatedAt is when the cart was last amended, RFC3339. | | `user` | body | string | — | User is the signed-in shopper this cart belongs to, empty for a guest cart. | Failure carries the platform error shape — see [Errors](https://docs.hanzo.ai/docs/errors). ## Examples **CLI** ```bash hanzo commerce cart create ``` **SDK** **.ts** ```ts import { Configuration, CommerceApi } from 'hanzoai'; const api = new CommerceApi(new Configuration({ accessToken: process.env.HANZO_API_KEY })); const { data } = await api.openCart({ currency: "", email: "" }); ``` **.py** ```python from hanzoai.cloud import ApiClient, Configuration from hanzoai.cloud.api import CommerceApi client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"])) result = CommerceApi(client).open_cart(currency="", email="") ``` **.go** ```go cfg := hanzoai.NewConfiguration() cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY")) client := hanzoai.NewAPIClient(cfg) resp, _, err := client.CommerceAPI.OpenCart(context.Background()).Execute() if err != nil { return err } ``` **.rs** ```rust use hanzo_client::apis::{configuration::Configuration, commerce_api}; let mut cfg = Configuration::new(); cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok(); let result = commerce_api::open_cart(&cfg, Default::default()).await?; ``` **.java** ```java import ai.hanzo.cloud.ApiClient; import ai.hanzo.cloud.api.CommerceApi; ApiClient client = new ApiClient(); client.setBearerToken(System.getenv("HANZO_API_KEY")); var result = new CommerceApi(client).openCart(); ``` **HTTP** ```bash curl -X POST https://api.hanzo.ai/v1/commerce/cart \ -H "Authorization: Bearer $HANZO_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "currency": "", "email": "" }' ``` **MCP** Tool `commerce`, op `openCart` — POST the JSON-RPC envelope to `https://api.hanzo.ai/v1/mcp`. ```bash curl -X POST https://api.hanzo.ai/v1/mcp \ -H "Authorization: Bearer $HANZO_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "commerce", "arguments": { "op": "openCart", "input": { "currency": "", "email": "" } } } }' ``` --- [Commerce API](https://docs.hanzo.ai/docs/openapi/commerce) · [All Hanzo APIs](https://docs.hanzo.ai/docs/openapi) · [Interactive reference](https://docs.hanzo.ai/docs/openapi/reference)