ShopBack Account Linking API

openapi: 3.2.0
info:
  title: Online Payments Account Linking API
  version: '2.0'
servers:
- url: https://integrations-sandbox.shopback.com/demo/merchant
  description: staging environment
tags:
- name: Account Linking
paths:
  /tokenized-payment/v1/link-sessions/link/{linkToken}:
    get:
      operationId: get-link-session
      summary: Get link session status
      description: Returns the current state of a tokenized payment link session. Poll this endpoint after redirecting the user to determine when the consent flow is complete.
      tags:
      - Account Linking
      security:
      - bearer: []
      parameters:
      - name: linkToken
        required: true
        in: path
        description: The link session UUID returned by `POST /link-sessions/link`.
        example: 550e8400-e29b-41d4-a716-446655440000
        schema:
          type: string
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetLinkSessionResponse'
        '401':
          description: Missing or invalid merchant JWT.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MgsExternalErrorResponseDto'
        '404':
          description: Link session not found or belongs to a different merchant.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MgsExternalErrorResponseDto'
      x-source-doc: https://docs.shopback.com/reference/get-link-session
  /tokenized-payment/v1/link-sessions/link:
    post:
      operationId: initiate-link-session
      summary: Initiate a tokenized payment link session
      description: Creates a PENDING link session and returns a `redirectUrl` and `appToken`. The merchant opens `redirectUrl` in an in-app browser and passes `appToken` as `X-ShopBack-App-Token`.
      tags:
      - Account Linking
      security:
      - bearer: []
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/InitiateLinkSessionRequest'
      responses:
        '200':
          description: Link session created; merchant should redirect user to `redirectUrl`.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/InitiateLinkSessionResponse'
        '400':
          description: Invalid request body, malformed `callbackUrl`, `callbackUrl` not on the channel allowlist, or `userHint` missing or contains no sub-fields.
        '401':
          description: Missing or invalid merchant JWT.
      x-source-doc: https://docs.shopback.com/reference/initiate-link-session
  /tokenized-payment/v1/link-sessions/token:
    post:
      operationId: swap-payment-token
      summary: Exchange an auth code for a payment token
      description: Validates the one-time auth code issued after the user completes the ShopBack consent flow and returns a reusable payment token scoped to the merchant channel.
      tags:
      - Account Linking
      security:
      - bearer: []
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SwapPaymentTokenRequest'
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SwapPaymentTokenResponse'
        '400':
          description: The auth code is missing, the link session is not ready to exchange a code, the auth code has expired, or the auth code is incorrect.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MgsExternalErrorResponseDto'
        '401':
          description: Missing or invalid merchant JWT.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MgsExternalErrorResponseDto'
        '404':
          description: Link session not found or belongs to a different merchant.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MgsExternalErrorResponseDto'
      x-source-doc: https://docs.shopback.com/reference/swap-payment-token
  /tokenized-payment/v1/tokens/unlink:
    post:
      operationId: unlink-payment-token
      summary: Revoke a linked payment token
      description: Unlinks a payment token for the authenticated merchant channel. Returns 400 if an active pre-auth (AUTHORIZED) is still open for the account.
      tags:
      - Account Linking
      security:
      - bearer: []
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UnlinkPaymentTokenRequest'
      responses:
        '200':
          description: Payment token successfully unlinked.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UnlinkPaymentTokenResponse'
        '400':
          description: paymentToken field is missing from the body, or an active pre-auth blocks the unlink.
        '401':
          description: Missing or invalid merchant JWT.
        '404':
          description: Payment token not found or already unlinked.
      x-source-doc: https://docs.shopback.com/reference/unlink-payment-token
components:
  schemas:
    MgsExternalErrorResponseDto:
      required:
      - statusCode
      - errorMessages
      - errorId
      - name
      - errorCode
      - code
      - helpUrl
      type: object
      properties:
        statusCode:
          type: number
          example: 404
        errorMessages:
          example:
          - Pre-auth not found
          type: array
          items:
            type: string
        errorId:
          type: string
          example: trace-id-abc123
        name:
          type: string
          example: NOT_FOUND
        errorCode:
          type: string
          example: NOT_FOUND
        code:
          type: string
          example: pre-auth.not-found
        helpUrl:
          type: string
          example: https://support.hoolah.co/error?code=pre-auth.not-found
    SwapPaymentTokenResponse:
      required:
      - paymentToken
      type: object
      properties:
        paymentToken:
          type: string
          description: Long-lived opaque token scoped to (merchant, user, country). Re-linking the same user returns the same value.
          example: aBcD1234eFgH5678iJkL9012mNoP3456
    UserHintDto:
      type: object
      properties:
        phone:
          type: string
          description: Pre-redacted phone number as registered with the merchant (e.g. "+6591xxxx67"). Displayed as-is on the consent page. The merchant is responsible for redacting before sending.
          example: +6591xxxx67
          maxLength: 30
        email:
          type: string
          description: Pre-redacted email address as registered with the merchant (e.g. "r***@example.com"). Displayed as-is on the consent page. The merchant is responsible for redacting before sending.
          example: r***@example.com
          maxLength: 254
    UnlinkPaymentTokenResponse:
      required:
      - paymentToken
      - status
      type: object
      properties:
        paymentToken:
          type: string
          description: The payment token that was revoked.
          example: aBcD1234eFgH5678iJkL9012mNoP3456
        status:
          type: string
          description: New status of the payment token after revocation.
          enum:
          - LINKED
          - UNLINKED
          example: UNLINKED
    SwapPaymentTokenRequest:
      required:
      - code
      type: object
      properties:
        code:
          type: string
          description: The short-lived auth code. Single-use, has TTL.
          example: a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4
    InitiateLinkSessionResponse:
      required:
      - linkToken
      - redirectUrl
      - expiresAt
      - appToken
      type: object
      properties:
        linkToken:
          type: string
          description: Opaque UUID identifying the linking session. Not embedded in `redirectUrl`.
          example: 550e8400-e29b-41d4-a716-446655440000
        redirectUrl:
          type: string
          description: Base ShopBack URL. Does NOT include any token; the merchant appends token(s) themselves before opening the in-app browser. Valid until `expiresAt`.
          example: https://pay.shopback.com/link
        expiresAt:
          type: string
          description: Session TTL from creation. After this, the session is EXPIRED.
          example: '2026-04-30T10:20:00.000Z'
        appToken:
          type: string
          description: HS256-signed JWT binding this response to the link session. The payload contains { linkToken } and expires at the same time as the session. Pass this as the X-ShopBack-App-Token header when opening the in-app browser.
          example: <HS256-signed-jwt>
    InitiateLinkSessionRequest:
      required:
      - callbackUrl
      - state
      - merchantUserId
      - userHint
      type: object
      properties:
        callbackUrl:
          type: string
          description: Merchant callback URL; must be on the per-channel allowlist.
          example: https://merchant-name.sg/link/callback
        state:
          type: string
          description: Merchant-supplied CSRF nonce; stored verbatim and echoed back unchanged in the callback redirect.
          example: a8f3c2e1d7b4509f
        merchantUserId:
          type: string
          description: Merchant's opaque user ID. Used to verify that tokenized payments can only be made to the same customer who initiated the link session.
          example: merchant_user_42
        userHint:
          description: Identity hints from the merchant displayed on the ShopBack consent page so the user can verify the linking request was intended for them. At least one sub-field must be present. ShopBack does not validate these values — they are display-only.
          allOf:
          - $ref: '#/components/schemas/UserHintDto'
    GetLinkSessionResponse:
      required:
      - linkToken
      - status
      - expiresAt
      - authCode
      - authCodeExpiresAt
      type: object
      properties:
        linkToken:
          type: string
          description: Opaque UUID identifying the linking session (the merchant-facing `linkToken`).
          example: 550e8400-e29b-41d4-a716-446655440000
        status:
          type: string
          description: Current lifecycle state of the link session.
          enum:
          - PENDING
          - CODE_ISSUED
          - COMPLETED
          - EXPIRED
          example: PENDING
        expiresAt:
          type: string
          description: Overall session TTL (20 min from creation). After this the session transitions to EXPIRED.
          example: '2026-04-30T10:20:00.000Z'
        authCode:
          type:
          - string
          - 'null'
          description: Short-lived auth code issued after rider consent. Non-null only when `status = CODE_ISSUED`; pass to `POST /token` to complete the exchange.
          example: a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4
        authCodeExpiresAt:
          type:
          - string
          - 'null'
          description: 60-second TTL on `authCode`. Non-null only when `status = CODE_ISSUED`.
          example: '2026-04-30T10:01:05.000Z'
    UnlinkPaymentTokenRequest:
      required:
      - paymentToken
      type: object
      properties:
        paymentToken:
          type: string
          description: Payment token to revoke. Sent in the request body (not the URL) to prevent the value from appearing in access logs and APM telemetry.
          example: aBcD1234eFgH5678iJkL9012mNoP3456
  securitySchemes:
    bearer:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: Merchant JWT obtained from POST /merchant-gateway/auth/login.
x-tagGroups:
- name: Orders
  tags:
  - Orders
- name: Authentication
  tags:
  - Authentication
- name: Platform
  tags:
  - Platform
- name: Tokenized Payment
  tags:
  - Account Linking
  - Pre-Auth
x-apievangelist-assembly:
  method: searched
  note: Assembled verbatim from the per-operation OpenAPI definitions ShopBack publishes on each API reference page of docs.shopback.com (ReadMe .md export). No content was authored or altered; path items, schemas and security schemes are exactly as published.
  fetched: '2026-08-02'
  index: https://docs.shopback.com/llms.txt
  sources:
  - https://docs.shopback.com/reference/capture-pre-auth.md
  - https://docs.shopback.com/reference/create-pre-auth.md
  - https://docs.shopback.com/reference/get-cashback-balance.md
  - https://docs.shopback.com/reference/get-link-session.md
  - https://docs.shopback.com/reference/get-pre-auth.md
  - https://docs.shopback.com/reference/getorderinfo.md
  - https://docs.shopback.com/reference/immediate-charge.md
  - https://docs.shopback.com/reference/initiate-link-session.md
  - https://docs.shopback.com/reference/initiateorder.md
  - https://docs.shopback.com/reference/initiateorderrefund.md
  - https://docs.shopback.com/reference/login.md
  - https://docs.shopback.com/reference/swap-payment-token.md
  - https://docs.shopback.com/reference/unlink-payment-token.md
  - https://docs.shopback.com/reference/void-pre-auth.md
  http_status: 200