Q2 Card - Mock API

Endpoints related to simulating card workflows

Documentation GitHub OpenAPI

Operations 7

POST /card/mock/admin/falconFraud Simulate Falcon Fraud Message in sandbox environment #

POST /card/mock/decline/purchase/authorize Simulate declined purchase authorization in sandbox environment #

POST /card/mock/deposit/purchase/return Simulate purchase return in sandbox environment #

POST /card/mock/deposit/purchase/return/reversal Simulate purchase return reversal in sandbox environment #

POST /card/mock/withdrawal/cardCash Simulate ATM withdrawal in sandbox environment #

POST /card/mock/withdrawal/purchase/authorize Simulate withdrawal authorization in sandbox environment #

POST /card/mock/withdrawal/purchase/complete Simulate withdrawal settlement in sandbox environment #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Helix Card - Mock API
  version: 3.0.0
  description: Helix Public API (no customer KYC/IDV). **This spec covers all of Helix 3.x and is subject to change at any time.**
servers:
- url: https://sandbox-api.helix.q2.com
  description: Sandbox server
- url: https://api.helix.q2.com
  description: Production server
security:
- basicAuth: []
tags:
- name: Card - Mock
  description: Endpoints related to simulating card workflows
paths:
  /card/mock/admin/falconFraud:
    post:
      summary: Simulate Falcon Fraud Message in sandbox environment
      description: Generate a mock Falcon messsage in sandbox. This endpoint will generate a Falcon Message real-time event with a `userEventTypeId` between `10024` and `10026` (inclusive).
      externalDocs:
        url: https://docs.helix.q2.com/reference/cardmockadminfalconfraud
      tags:
      - Card - Mock
      operationId: cardMockAdminFalconFraud
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - customerId
              - cardId
              - caseStatus
              properties:
                customerId:
                  $ref: '#/components/schemas/HelixId'
                cardId:
                  $ref: '#/components/schemas/HelixId'
                caseStatus:
                  type: integer
                  minimum: 0
                  maximum: 3
                  description: 'Possible values:

                    - `0`: Generates a real-time event with `userEventTypeId=10026` and `falconCaseStatus=ACTIVEACTIVE_CASE_SUBSTATUS_DLR_ACTIVENO_BLOCK_SERVICE|`

                    - `1`: Generates a real-time event with `userEventTypeId=10025` and `falconCaseStatus=CLOSEDNOT_FRAUDNO_BLOCK_SERVICE|`

                    - `2`: Generates a real-time event with `userEventTypeId=10025` and `falconCaseStatus=CLOSEDNOT_FRAUDREMOVE_BLOCK_SERVICE|`

                    - `3`: Generates a real-time event with `userEventTypeId=10024` and `falconCaseStatus=CLOSEDUNABLE_CONFIRMED_FRAUDFRAUD_BLOCK_SERVICE|CASE_FRAUD_TYPE_OTHER|`

                    '
      responses:
        '200':
          description: A 200 status with no `data` property present
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CardArray200Response/allOf/0'
  /card/mock/decline/purchase/authorize:
    post:
      summary: Simulate declined purchase authorization in sandbox environment
      description: Generate a mock declined purchase authorization in sandbox. This endpoint will generate a Debit Card Declined real-time event with `userEventTypeId=3060640`.
      externalDocs:
        url: https://docs.helix.q2.com/reference/cardmockdeclinepurchaseauthorize
      tags:
      - Card - Mock
      operationId: cardMockDeclinePurchaseAuthorize
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - customerId
              - cardId
              - merchantDescription
              properties:
                customerId:
                  $ref: '#/components/schemas/HelixId'
                cardId:
                  $ref: '#/components/schemas/HelixId'
                merchantDescription:
                  type: string
                  maxLength: 25
      responses:
        '200':
          description: A 200 status with no `data` property present
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CardArray200Response/allOf/0'
  /card/mock/deposit/purchase/return:
    post:
      summary: Simulate purchase return in sandbox environment
      description: Generate a mock debit card purchase return transaction in sandbox. This endpoint will generate a transaction with `typeCode=CRDRTN` and a Debit Card Deposit real-time event with `userEventTypeId=3060351`.
      externalDocs:
        url: https://docs.helix.q2.com/reference/cardmockdepositpurchasereturn
      tags:
      - Card - Mock
      operationId: cardMockDepositPurchaseReturn
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - customerId
              - cardId
              - transactionAmount
              - merchantDescription
              properties:
                customerId:
                  $ref: '#/components/schemas/HelixId'
                cardId:
                  $ref: '#/components/schemas/HelixId'
                transactionAmount:
                  type: number
                  format: decimal
                  minimum: 0.01
                  maximum: 999.99
                merchantDescription:
                  type: string
                  maxLength: 25
      responses:
        '200':
          description: A 200 status with no `data` property present
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CardArray200Response/allOf/0'
  /card/mock/deposit/purchase/return/reversal:
    post:
      summary: Simulate purchase return reversal in sandbox environment
      description: Generate a mock debit card merchandise return reversal transaction in sandbox. This endpoint will generate a transaction with `typeCode=REVRTN` and a Debit Card Deposit Reversal real-time event with `userEventTypeId=3060481`.
      externalDocs:
        url: https://docs.helix.q2.com/reference/cardmockdepositpurchasereturnreversal
      tags:
      - Card - Mock
      operationId: cardMockDepositPurchaseReturnReversal
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - customerId
              - cardId
              - transactionId
              properties:
                customerId:
                  $ref: '#/components/schemas/HelixId'
                cardId:
                  $ref: '#/components/schemas/HelixId'
                transactionId:
                  allOf:
                  - description: The `transactionId` of a merchandise return transaction generated via [/card/mock/deposit/purchase/return](https://docs.helix.q2.com/reference/cardmockdepositpurchasereturn)
                  - $ref: '#/components/schemas/AccountClose200Response/allOf/1/properties/data/properties/transactionId'
      responses:
        '200':
          description: A 200 status with no `data` property present
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CardArray200Response/allOf/0'
  /card/mock/withdrawal/cardCash:
    post:
      summary: Simulate ATM withdrawal in sandbox environment
      description: Generate a mock debit card ATM withdrawal transaction in sandbox. This endpoint will generate a transaction with `typeCode=CRDCSH` and a Debit Card Withdrawal real-time event with `userEventTypeId=3060343`.
      externalDocs:
        url: https://docs.helix.q2.com/reference/cardmockwithdrawalcardcash
      tags:
      - Card - Mock
      operationId: cardMockWithdrawalCardCash
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - customerId
              - cardId
              - transactionAmount
              - merchantDescription
              properties:
                customerId:
                  $ref: '#/components/schemas/HelixId'
                cardId:
                  $ref: '#/components/schemas/HelixId'
                transactionAmount:
                  type: number
                  format: decimal
                  minimum: 0.01
                  maximum: 999.99
                merchantDescription:
                  type: string
                  maxLength: 25
      responses:
        '200':
          description: A 200 status with no `data` property present. Use the <a href="https://docs.helix.q2.com/reference/transactionlist" target="_blank">/transaction/list</a> endpoint to fetch transaction details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CardArray200Response/allOf/0'
  /card/mock/withdrawal/purchase/authorize:
    post:
      summary: Simulate withdrawal authorization in sandbox environment
      description: Generate a mock debit card withdrawal authorization transaction in sandbox. This endpoint will generate a transaction with `typeCode=ATHPCH` and a Debit Card Withdrawal Authorization real-time event with `userEventTypeId=3060240`.
      externalDocs:
        url: https://docs.helix.q2.com/reference/cardmockwithdrawalpurchaseauthorize
      tags:
      - Card - Mock
      operationId: cardMockWithdrawalPurchaseAuthorize
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - customerId
              - cardId
              - transactionAmount
              properties:
                customerId:
                  $ref: '#/components/schemas/HelixId'
                cardId:
                  $ref: '#/components/schemas/HelixId'
                transactionAmount:
                  type: number
                  format: decimal
                  minimum: 0.01
                  maximum: 999.99
                merchantDescription:
                  type: string
                  maxLength: 25
                settlementDate:
                  allOf:
                  - description: Must occur in the future
                  - $ref: '#/components/schemas/CustomerSetLastContact200Response/allOf/1/properties/data/items/properties/lastContactDate'
      responses:
        '200':
          description: A 200 status with no `data` property present. Use the <a href="https://docs.helix.q2.com/reference/transactionlist" target="_blank">/transaction/list</a> endpoint to fetch transaction details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CardArray200Response/allOf/0'
  /card/mock/withdrawal/purchase/complete:
    post:
      summary: Simulate withdrawal settlement in sandbox environment
      description: Generate a mock debit card withdrawal settlement transaction in sandbox. This endpoint will generate a transaction with `typeCode=CRDPCH` and a Debit Card Withdrawal real-time event with `userEventTypeId=3060341`.
      externalDocs:
        url: https://docs.helix.q2.com/reference/cardmockwithdrawalpurchasecomplete
      tags:
      - Card - Mock
      operationId: cardMockWithdrawalPurchaseComplete
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - customerId
              - cardId
              - transactionId
              - transactionAmount
              properties:
                customerId:
                  $ref: '#/components/schemas/HelixId'
                cardId:
                  $ref: '#/components/schemas/HelixId'
                transactionId:
                  allOf:
                  - description: The `transactionId` from a pending withdrawal authorization transaction generated via [/card/mock/withdrawal/purchase/authorize](https://docs.helix.q2.com/reference/cardmockwithdrawalpurchaseauthorize)
                  - $ref: '#/components/schemas/AccountClose200Response/allOf/1/properties/data/properties/transactionId'
                transactionAmount:
                  type: number
                  format: decimal
                  minimum: 0.01
                  maximum: 999.99
                  description: The total amount to settle on the transaction (can be different from the original authorization amount)
      responses:
        '200':
          description: A 200 status with no `data` property present. Use the <a href="https://docs.helix.q2.com/reference/transactionlist" target="_blank">/transaction/list</a> endpoint to fetch transaction details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CardArray200Response/allOf/0'
components:
  schemas:
    CardArray200Response:
      allOf:
      - type: object
        properties:
          errors:
            type: array
            items: {}
            example: []
          requestId:
            type: string
            example: 1249a3bf-aca1-40dd-9fba-2a3193550c39
          status:
            type: integer
            enum:
            - 200
          throttle:
            type: object
            properties:
              periodEndsAt:
                $ref: '#/components/schemas/CustomerSetLastContact200Response/allOf/1/properties/data/items/properties/lastContactDate'
              periodLengthInSeconds:
                $ref: '#/components/schemas/HelixId'
              periodRequestLimit:
                $ref: '#/components/schemas/HelixId'
              requestsRemainingInPeriod:
                $ref: '#/components/schemas/HelixId'
              warningThreshold:
                type: number
                format: decimal
                example: 0.2
      - type: object
        properties:
          data:
            type: array
            items:
              $ref: '#/components/schemas/CardObject200Response/allOf/1/properties/data'
    CustomerSetLastContact200Response:
      allOf:
      - $ref: '#/components/schemas/CardArray200Response/allOf/0'
      - type: object
        properties:
          data:
            type: array
            items:
              type: object
              properties:
                customerId:
                  $ref: '#/components/schemas/HelixId'
                dormancyStatus:
                  type: string
                  enum:
                  - Active
                  - Inactive
                  - Dormant
                lastContactDate:
                  type: string
                  format: date-time
                  example: '2021-01-07T19:00:59.761-06:00'
                lastContactType:
                  $ref: '#/components/schemas/LastContactType'
    AccountClose200Response:
      allOf:
      - $ref: '#/components/schemas/CardArray200Response/allOf/0'
      - type: object
        properties:
          data:
            type: object
            properties:
              customerId:
                $ref: '#/components/schemas/HelixId'
              accountId:
                $ref: '#/components/schemas/HelixId'
              closeToAccountId:
                $ref: '#/components/schemas/HelixId'
              transactionId:
                type: integer
                format: int64
                minimum: 1
              transactionTag:
                $ref: '#/components/schemas/TagProperty'
              closingBalanceAmount:
                type: number
                format: decimal
              interestPaidAmount:
                type: number
                format: decimal
              totalClosingAmount:
                type: number
                format: decimal
              isClosedToExternalAccount:
                type: boolean
    HelixId:
      type: integer
      format: int32
      minimum: 1
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
x-samples-languages:
- curl
- node
- python
- csharp
- ruby
- go
- java
- kotlin
- php
x-provenance:
  method: searched
  source: https://docs.helix.q2.com/reference
  harvested: '2026-10-14'
  tool: harvest-readme-openapi.py
  note: Assembled verbatim from the OpenAPI definition ReadMe embeds in each operation page of the provider's developer portal; paths and components merged by API title, nothing authored.
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  merge:
    pages: 137
    deduped: 1427
    conflicts_kept_first: 0

Q2 Card - Mock API

Operations 7

Documentation

Specifications

Schemas & Data

Other Resources