Stripe Attach Payment Method

arazzo: 1.0.1
info:
  title: Stripe Attach Payment Method
  summary: Create a payment method, attach it to a customer, then list the customer's saved methods.
  description: >-
    The save-a-card-on-file pattern. The workflow creates a PaymentMethod from
    card details, attaches it to a customer so it can be reused, then lists the
    customer's saved card payment methods to confirm the attachment. Every step
    spells out its form-encoded request inline so the flow can be read and
    executed without opening the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: paymentMethodApi
  url: ../openapi/stripe-payment-method-api-openapi.yml
  type: openapi
- name: customersApi
  url: ../openapi/stripe-customers-api-openapi.yml
  type: openapi
workflows:
- workflowId: attach-payment-method
  summary: Create and attach a payment method, then verify it on the customer.
  description: >-
    Creates a PaymentMethod of the supplied type, attaches it to the customer,
    then lists the customer's saved payment methods to confirm it is on file.
  inputs:
    type: object
    required:
    - type
    - customer
    properties:
      type:
        type: string
        description: The PaymentMethod type to create (e.g. card).
      customer:
        type: string
        description: ID of the customer to attach the payment method to.
  steps:
  - stepId: createPaymentMethod
    description: Create a PaymentMethod of the requested type.
    operationId: postPaymentMethods
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        type: $inputs.type
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      paymentMethodId: $response.body#/id
  - stepId: attachToCustomer
    description: Attach the new payment method to the customer for reuse.
    operationId: postPaymentMethodsPaymentMethodAttach
    parameters:
    - name: payment_method
      in: path
      value: $steps.createPaymentMethod.outputs.paymentMethodId
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        customer: $inputs.customer
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      attachedCustomer: $response.body#/customer
  - stepId: listCustomerMethods
    description: List the customer's saved card payment methods to confirm the attachment.
    operationId: getCustomersCustomerPaymentMethods
    parameters:
    - name: customer
      in: path
      value: $inputs.customer
    - name: type
      in: query
      value: card
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      methods: $response.body#/data
  outputs:
    paymentMethodId: $steps.createPaymentMethod.outputs.paymentMethodId
    attachedCustomer: $steps.attachToCustomer.outputs.attachedCustomer
    methods: $steps.listCustomerMethods.outputs.methods