Interswitch Offers API

openapi: 3.1.0
info:
  title: Interswitch Recharge Airtime Offers 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: Offers
paths:
  /lending-service/api/v3/offers:
    get:
      tags:
      - Offers
      summary: List Loan Offers For Customer
      operationId: listLoanOffers
      parameters:
      - in: query
        name: customerId
        required: true
        schema:
          type: string
      - in: query
        name: amount
        schema:
          type: integer
      responses:
        '200':
          description: Loan offers.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Offer'
  /lending-service/api/v1/offers/{offerId}/accept:
    post:
      tags:
      - Offers
      summary: Accept Loan Offer
      operationId: acceptLoanOffer
      parameters:
      - in: path
        name: offerId
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Loan created.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Loan'
components:
  schemas:
    Loan:
      type: object
      properties:
        loanId:
          type: string
        customerId:
          type: string
        providerId:
          type: string
        principal:
          type: integer
        outstandingBalance:
          type: integer
        currency:
          type: string
        interestRate:
          type: number
          format: float
        tenorDays:
          type: integer
        status:
          type: string
          enum:
          - PENDING
          - ACTIVE
          - CLOSED
          - DEFAULTED
          - WRITTEN_OFF
        disbursedAt:
          type: string
          format: date-time
        dueAt:
          type: string
          format: date-time
    Offer:
      type: object
      properties:
        offerId:
          type: string
        providerId:
          type: string
        principal:
          type: integer
        currency:
          type: string
        interestRate:
          type: number
          format: float
        tenorDays:
          type: integer
        productType:
          type: string
          enum:
          - NANO
          - SALARY
          - VALUE_FINANCING
  securitySchemes:
    InterswitchAuth:
      type: apiKey
      in: header
      name: Authorization