Backpack Balance-Checked Withdrawal

arazzo: 1.0.1
info:
  title: Backpack Balance-Checked Withdrawal
  summary: Confirm available balance, request a withdrawal, then reconcile it against withdrawal history.
  description: >-
    A guarded withdrawal flow for the Backpack Exchange. It reads account
    balances to confirm there is available asset, submits a withdrawal request to
    the configured address on the chosen blockchain, and then reads withdrawal
    history to reconcile the newly requested withdrawal by its id. Every step
    inlines its request — including the ED25519 signing headers required on
    authenticated calls — so the flow can be read and executed without opening
    the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: backpackApi
  url: ../openapi/backpack-exchange-openapi.yml
  type: openapi
workflows:
- workflowId: balance-checked-withdrawal
  summary: Check balances, request a withdrawal, and reconcile it against withdrawal history.
  description: >-
    Reads account balances, submits a withdrawal request for the supplied asset,
    quantity, blockchain, and address, then reads withdrawal history filtered to
    the new withdrawal id to confirm it was recorded.
  inputs:
    type: object
    required:
    - symbol
    - blockchain
    - address
    - quantity
    - apiKey
    - signature
    - timestamp
    properties:
      symbol:
        type: string
        description: Symbol of the asset to withdraw (e.g. USDC).
      blockchain:
        type: string
        description: Blockchain to withdraw on (e.g. Solana, Ethereum).
      address:
        type: string
        description: Destination address to withdraw to.
      quantity:
        type: string
        description: Quantity to withdraw, as a decimal string.
      twoFactorToken:
        type: string
        description: Issued two factor token, required if the address is not 2FA-exempt.
      apiKey:
        type: string
        description: Base64 encoded ED25519 verifying key for the X-API-KEY header.
      signature:
        type: string
        description: Base64 encoded ED25519 signature for the X-SIGNATURE header.
      timestamp:
        type: integer
        description: Unix time in milliseconds for the X-TIMESTAMP header.
      window:
        type: integer
        description: Request validity window in milliseconds for the X-WINDOW header (default 5000).
  steps:
  - stepId: getBalances
    description: >-
      Read account balances to confirm there is available asset before
      requesting the withdrawal.
    operationId: get_balances
    parameters:
    - name: X-API-KEY
      in: header
      value: $inputs.apiKey
    - name: X-SIGNATURE
      in: header
      value: $inputs.signature
    - name: X-TIMESTAMP
      in: header
      value: $inputs.timestamp
    - name: X-WINDOW
      in: header
      value: $inputs.window
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      balances: $response.body
  - stepId: requestWithdrawal
    description: >-
      Submit a withdrawal request for the supplied asset, quantity, blockchain,
      and destination address.
    operationId: request_withdrawal
    parameters:
    - name: X-API-KEY
      in: header
      value: $inputs.apiKey
    - name: X-SIGNATURE
      in: header
      value: $inputs.signature
    - name: X-TIMESTAMP
      in: header
      value: $inputs.timestamp
    - name: X-WINDOW
      in: header
      value: $inputs.window
    requestBody:
      contentType: application/json; charset=utf-8
      payload:
        symbol: $inputs.symbol
        blockchain: $inputs.blockchain
        address: $inputs.address
        quantity: $inputs.quantity
        twoFactorToken: $inputs.twoFactorToken
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      withdrawalId: $response.body#/id
      status: $response.body#/status
  - stepId: reconcileWithdrawal
    description: >-
      Read withdrawal history filtered to the new withdrawal id to confirm it
      was recorded by the exchange.
    operationId: get_withdrawals
    parameters:
    - name: X-API-KEY
      in: header
      value: $inputs.apiKey
    - name: X-SIGNATURE
      in: header
      value: $inputs.signature
    - name: X-TIMESTAMP
      in: header
      value: $inputs.timestamp
    - name: X-WINDOW
      in: header
      value: $inputs.window
    - name: id
      in: query
      value: $steps.requestWithdrawal.outputs.withdrawalId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      reconciledStatus: $response.body#/0/status
      reconciledId: $response.body#/0/id
  outputs:
    withdrawalId: $steps.requestWithdrawal.outputs.withdrawalId
    status: $steps.reconcileWithdrawal.outputs.reconciledStatus