Swell

Swell Cart API

Session-scoped shopping cart for the current visitor.

Documentation GitHub OpenAPI

Operations 8

GET /api/cart Retrieve Current Cart #

PUT /api/cart Update Current Cart #

POST /api/cart/items Add Item To Cart #

PUT /api/cart/items/{itemId} Update Cart Item #

DELETE /api/cart/items/{itemId} Remove Cart Item #

PUT /api/cart/apply-coupon Apply Coupon To Cart #

PUT /api/cart/apply-giftcard Apply Gift Card To Cart #

GET /api/cart/recover/{token} Recover Cart #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Swell Frontend Cart API
  version: 2025-01
  description: Swell Frontend API — the client-safe, public-key-authenticated REST surface used from storefronts, single-page apps, and headless commerce experiences.
  contact:
    name: Swell Developer Support
    url: https://developers.swell.is/frontend-api/introduction
  license:
    name: API Profile — API Evangelist
    url: https://apievangelist.com
servers:
- url: https://{storeId}.swell.store
  description: Per-store Frontend API endpoint
  variables:
    storeId:
      default: my-store
      description: Your Swell store ID (subdomain).
security:
- SwellPublicKey: []
tags:
- name: Cart
  description: Session-scoped shopping cart for the current visitor.
paths:
  /api/cart:
    get:
      tags:
      - Cart
      summary: Retrieve Current Cart
      operationId: frontendGetCart
      responses:
        '200':
          description: Current cart for the session.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Cart'
    put:
      tags:
      - Cart
      summary: Update Current Cart
      operationId: frontendUpdateCart
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Cart'
      responses:
        '200':
          description: Updated cart.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Cart'
  /api/cart/items:
    post:
      tags:
      - Cart
      summary: Add Item To Cart
      operationId: frontendAddCartItem
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                product_id:
                  type: string
                quantity:
                  type: integer
                variant_id:
                  type: string
                options:
                  type: array
                  items:
                    type: object
      responses:
        '200':
          description: Updated cart.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Cart'
  /api/cart/items/{itemId}:
    parameters:
    - name: itemId
      in: path
      required: true
      schema:
        type: string
    put:
      tags:
      - Cart
      summary: Update Cart Item
      operationId: frontendUpdateCartItem
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                quantity:
                  type: integer
      responses:
        '200':
          description: Updated.
    delete:
      tags:
      - Cart
      summary: Remove Cart Item
      operationId: frontendRemoveCartItem
      responses:
        '200':
          description: Removed.
  /api/cart/apply-coupon:
    put:
      tags:
      - Cart
      summary: Apply Coupon To Cart
      operationId: frontendApplyCoupon
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                code:
                  type: string
      responses:
        '200':
          description: Coupon applied.
  /api/cart/apply-giftcard:
    put:
      tags:
      - Cart
      summary: Apply Gift Card To Cart
      operationId: frontendApplyGiftcard
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                code:
                  type: string
      responses:
        '200':
          description: Gift card applied.
  /api/cart/recover/{token}:
    parameters:
    - name: token
      in: path
      required: true
      schema:
        type: string
    get:
      tags:
      - Cart
      summary: Recover Cart
      operationId: frontendRecoverCart
      responses:
        '200':
          description: Recovered cart.
components:
  schemas:
    Money:
      type: number
      format: float
    Cart:
      type: object
      properties:
        id:
          type: string
        status:
          type: string
        account_id:
          type: string
        items:
          type: array
          items:
            type: object
        billing:
          type: object
        shipping:
          type: object
        sub_total:
          $ref: '#/components/schemas/Money'
        tax_total:
          $ref: '#/components/schemas/Money'
        discount_total:
          $ref: '#/components/schemas/Money'
        shipment_total:
          $ref: '#/components/schemas/Money'
        grand_total:
          $ref: '#/components/schemas/Money'
        coupon_code:
          type: string
        currency:
          type: string
  securitySchemes:
    SwellPublicKey:
      type: apiKey
      in: header
      name: Authorization
      description: 'Public storefront key, prefixed with `pk_`. Pass as `Authorization: pk_...`.'

Swell Cart API

Operations 8

Documentation

Specifications

Schemas & Data

Other Resources