Cellulant Custom Checkout API

openapi: 3.1.0
info:
  title: Cellulant Tingg Checkout Acknowledgement Custom Checkout API
  description: 'Tingg Checkout 3.0 — accept payments across 25+ African markets through

    a single integration. Supports Express Checkout (hosted/modal) and Custom

    Checkout (host-to-host) for mobile money, cards, and direct bank transfer.

    '
  version: 3.0.0
  contact:
    name: Cellulant Developer Support
    url: https://developer.tingg.africa
    email: developer@cellulant.io
  license:
    name: Cellulant Terms of Service
    url: https://www.cellulant.io/terms
servers:
- url: https://api.tingg.africa
  description: Production
- url: https://api-approval.tingg.africa
  description: Sandbox
security:
- BearerAuth: []
  ApiKeyAuth: []
tags:
- name: Custom Checkout
  description: Host-to-host checkout flow for merchant-controlled UX.
paths:
  /v3/checkout-api/checkout-request/custom-request:
    post:
      summary: Initiate Custom Checkout Request
      description: Initiate a host-to-host checkout where the merchant collects payment details and posts them to Tingg directly, retaining control of the UX.
      operationId: initiateCustomCheckout
      tags:
      - Custom Checkout
      parameters:
      - $ref: '#/components/parameters/ApiKey'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CustomCheckoutRequest'
      responses:
        '200':
          description: Custom checkout initiated
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CustomCheckoutResponse'
        4XX:
          $ref: '#/components/responses/ErrorResponse'
  /v3/checkout-api/checkout-request/charge:
    post:
      summary: Initiate Charge Request
      description: Post a charge request to debit the customer for an initiated custom checkout. Used to push USSD/STK prompts or card charges from the merchant's backend.
      operationId: initiateChargeRequest
      tags:
      - Custom Checkout
      parameters:
      - $ref: '#/components/parameters/ApiKey'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ChargeRequest'
      responses:
        '200':
          description: Charge accepted
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ChargeResponse'
        4XX:
          $ref: '#/components/responses/ErrorResponse'
  /v3/checkout-api/query-status:
    get:
      summary: Query Request Status
      description: Retrieve the current status of a previously raised checkout or charge request by merchant_transaction_id.
      operationId: queryRequestStatus
      tags:
      - Custom Checkout
      parameters:
      - $ref: '#/components/parameters/ApiKey'
      - name: merchant_transaction_id
        in: query
        required: true
        schema:
          type: string
      - name: service_code
        in: query
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Status retrieved
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StatusResponse'
        4XX:
          $ref: '#/components/responses/ErrorResponse'
components:
  schemas:
    ChargeRequest:
      type: object
      required:
      - checkout_request_id
      - payment_option_code
      - msisdn
      properties:
        checkout_request_id:
          type: string
        merchant_transaction_id:
          type: string
        service_code:
          type: string
        payment_option_code:
          type: string
        msisdn:
          type: string
        amount:
          type: number
          format: double
        currency_code:
          type: string
    ExpressCheckoutRequest:
      type: object
      required:
      - merchant_transaction_id
      - service_code
      - country_code
      - currency_code
      - request_amount
      - callback_url
      properties:
        merchant_transaction_id:
          type: string
          description: Unique merchant transaction id.
        service_code:
          type: string
          description: Tingg service code identifying the merchant's product line.
        country_code:
          type: string
          description: ISO 3166-1 alpha-2 country code (KE, UG, TZ, NG, GH, ...).
        currency_code:
          type: string
          description: ISO 4217 currency code.
        request_amount:
          type: number
          format: double
        request_description:
          type: string
        account_number:
          type: string
        msisdn:
          type: string
          description: Customer phone in E.164 format.
        customer_first_name:
          type: string
        customer_last_name:
          type: string
        customer_email:
          type: string
          format: email
        due_date:
          type: string
          format: date-time
        callback_url:
          type: string
          format: uri
        success_redirect_url:
          type: string
          format: uri
        fail_redirect_url:
          type: string
          format: uri
        payment_option_code:
          type: string
        language_code:
          type: string
          example: en
    CustomCheckoutRequest:
      allOf:
      - $ref: '#/components/schemas/ExpressCheckoutRequest'
      - type: object
        properties:
          payer_client_code:
            type: string
          payer_mode:
            type: string
            enum:
            - MOBILE
            - BANK
            - CARD
    CustomCheckoutResponse:
      type: object
      properties:
        status_code:
          type: integer
        checkout_request_id:
          type: string
        merchant_transaction_id:
          type: string
    Error:
      type: object
      properties:
        status_code:
          type: integer
        status_description:
          type: string
        errors:
          type: array
          items:
            type: object
            properties:
              code:
                type: string
              message:
                type: string
    ChargeResponse:
      type: object
      properties:
        status_code:
          type: integer
        status_description:
          type: string
        cpg_transaction_id:
          type: string
    StatusResponse:
      type: object
      properties:
        checkout_request_id:
          type: string
        merchant_transaction_id:
          type: string
        request_status_code:
          type: string
        request_status_description:
          type: string
        request_amount:
          type: number
          format: double
        payments:
          type: array
          items:
            $ref: '#/components/schemas/Payment'
        failed_payments:
          type: array
          items:
            $ref: '#/components/schemas/Payment'
    Payment:
      type: object
      properties:
        cpg_transaction_id:
          type: string
        payer_transaction_id:
          type: string
        customer_name:
          type: string
        msisdn:
          type: string
        amount_paid:
          type: number
          format: double
        currency_code:
          type: string
        payment_mode:
          type: string
        hub_overall_status:
          type: string
        payment_status:
          type: string
  parameters:
    ApiKey:
      name: apikey
      in: header
      required: true
      description: Merchant API key issued in the Tingg integration dashboard.
      schema:
        type: string
  responses:
    ErrorResponse:
      description: Error response
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
    ApiKeyAuth:
      type: apiKey
      in: header
      name: apikey
      description: Merchant apiKey issued in the Tingg integration dashboard.