Backpack Add a Take-Profit to a Position

arazzo: 1.0.1
info:
  title: Backpack Add a Take-Profit to a Position
  summary: Read an open futures position and the mark price, then place a reduce-only take-profit order.
  description: >-
    A position-management flow for the Backpack Exchange futures markets. It
    reads the account's open positions and the current mark price for the target
    symbol, then submits a reduce-only limit order on the opposite side at a
    take-profit price so the position is closed if price reaches the target.
    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: position-take-profit
  summary: Place a reduce-only take-profit order against an open futures position.
  description: >-
    Reads open positions and the mark price for the symbol, then submits a
    reduce-only limit order on the supplied side at the take-profit price and
    quantity.
  inputs:
    type: object
    required:
    - symbol
    - closeSide
    - takeProfitPrice
    - quantity
    - apiKey
    - signature
    - timestamp
    properties:
      symbol:
        type: string
        description: The futures market symbol (e.g. SOL_USDC_PERP).
      closeSide:
        type: string
        enum:
        - Bid
        - Ask
        description: The side that reduces the position (Ask to close a long, Bid to close a short).
      takeProfitPrice:
        type: string
        description: The limit price at which to take profit, as a decimal string.
      quantity:
        type: string
        description: The quantity of the position to close, as a decimal string.
      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: getPositions
    description: >-
      Read the account's open positions to confirm there is a position on the
      target symbol to protect.
    operationId: get_positions
    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:
      positions: $response.body
  - stepId: getMarkPrice
    description: >-
      Read the current mark price for the symbol so the take-profit target can
      be sanity-checked against the mark.
    operationId: get_mark_prices
    parameters:
    - name: symbol
      in: query
      value: $inputs.symbol
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      markPrices: $response.body
  - stepId: placeTakeProfit
    description: >-
      Submit a reduce-only limit order on the closing side at the take-profit
      price so the position closes when price reaches the target.
    operationId: execute_order
    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
        side: $inputs.closeSide
        orderType: Limit
        price: $inputs.takeProfitPrice
        quantity: $inputs.quantity
        reduceOnly: true
        timeInForce: GTC
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      orderId: $response.body#/id
      status: $response.body#/status
  outputs:
    orderId: $steps.placeTakeProfit.outputs.orderId
    status: $steps.placeTakeProfit.outputs.status
    positions: $steps.getPositions.outputs.positions