openapi: 3.1.0
info:
  title: Interswitch Recharge Airtime Hosted Fields API
  description: 'Virtual top-up (direct airtime and data) and e-pin voucher delivery for

    MTN, Airtel, Glo, and 9mobile. Same biller / category / payment-item flow

    as Bills Payment; category ID `4` is reserved for airtime billers and the

    customer''s phone number is supplied as `customer_id` on the payment advice.

    '
  version: '2024-01-01'
servers:
- url: https://sandbox.interswitchng.com
  description: Sandbox
- url: https://saturn.interswitchng.com
  description: Production
security:
- InterswitchAuth: []
tags:
- name: Hosted Fields
  description: Card data tokenization
paths:
  /paymentgateway/api/v1/hosted-fields/sessions:
    post:
      tags:
      - Hosted Fields
      summary: Create Hosted Fields Session
      description: Create a hosted-fields session so the browser can collect raw card data and POST it directly to Interswitch, keeping the merchant out of PCI scope.
      operationId: createHostedFieldsSession
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - transactionRef
              - amount
              - currency
              properties:
                transactionRef:
                  type: string
                amount:
                  type: integer
                currency:
                  type: string
                redirectUrl:
                  type: string
                  format: uri
      responses:
        '200':
          description: Session created.
          content:
            application/json:
              schema:
                type: object
                properties:
                  sessionId:
                    type: string
                  hostedFieldsUrl:
                    type: string
                    format: uri
                  expiresAt:
                    type: string
                    format: date-time
components:
  securitySchemes:
    InterswitchAuth:
      type: apiKey
      in: header
      name: Authorization