Kraken Amend an Open Order

arazzo: 1.0.1
info:
  title: Kraken Amend an Open Order
  summary: List open orders, amend one in place, then confirm the new terms.
  description: >-
    An in-place order-management flow for the Kraken Spot REST API. It lists the
    account's open orders, amends a specific resting order without changing its
    order id (AmendOrder preserves queue priority where possible), and queries
    the order back to confirm the amended quantity or price took effect. Every
    step spells out its request inline so the flow can be read and executed
    without opening the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: accountDataApi
  url: ../openapi/kraken-account-data-api-openapi.yml
  type: openapi
- name: tradingApi
  url: ../openapi/kraken-trading-api-openapi.yml
  type: openapi
workflows:
- workflowId: amend-open-order
  summary: Amend a resting spot order in place and confirm the change.
  description: >-
    Reads open orders, applies an in-place amendment (new quantity and/or limit
    price) to the supplied order, and queries the order to confirm.
  inputs:
    type: object
    required:
    - nonce
    - txid
    properties:
      nonce:
        type: string
        description: Ever-increasing nonce for the signed request.
      otp:
        type: string
        description: One-time password if two-factor is enabled on the API key.
      txid:
        type: string
        description: The transaction id of the resting order to amend.
      order_qty:
        type: string
        description: New total order quantity in base-asset terms.
      limit_price:
        type: string
        description: New limit price for the order.
      post_only:
        type: boolean
        description: Whether the amended order must remain post-only.
  steps:
  - stepId: listOpenOrders
    description: >-
      List all open orders so the caller can confirm the target order is still
      resting before amending it. Private Spot endpoints are signed and accept
      application/x-www-form-urlencoded bodies.
    operationId: getOpenOrders
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        nonce: $inputs.nonce
        otp: $inputs.otp
        trades: true
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      open: $response.body#/result/open
  - stepId: amend
    description: >-
      Amend the resting order in place. AmendOrder accepts a JSON body and keeps
      the original order id; only the supplied fields are changed.
    operationId: amendOrder
    requestBody:
      contentType: application/json
      payload:
        nonce: $inputs.nonce
        otp: $inputs.otp
        txid: $inputs.txid
        order_qty: $inputs.order_qty
        limit_price: $inputs.limit_price
        post_only: $inputs.post_only
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      amendId: $response.body#/result/amend_id
  - stepId: confirm
    description: >-
      Query the order back by transaction id to confirm the amendment took
      effect.
    operationId: queryOrdersInfo
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        nonce: $inputs.nonce
        otp: $inputs.otp
        txid: $inputs.txid
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      orders: $response.body#/result
  outputs:
    amendId: $steps.amend.outputs.amendId
    orders: $steps.confirm.outputs.orders