> ## Documentation Index
> Fetch the complete documentation index at: https://dexbuilder.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# 提交訂單

> 提交訂單

提交訂單。

> [!NOTE]
>
> 該介面為私有介面，需要按照事件合約認證要求完成認證後呼叫。


## OpenAPI

````yaml openapi/event-contracts-zh-TW.yaml POST /api/v4/broker/event_contracts/orders
openapi: 3.0.3
info:
  title: DexBuilder Event Contracts API
  version: 1.0.0
  description: DexBuilder 事件合約 REST API
servers:
  - url: https://api.dexbuilder.com
security: []
paths:
  /api/v4/broker/event_contracts/orders:
    post:
      summary: 提交訂單
      description: 提交訂單
      operationId: place_order
      parameters:
        - name: Timestamp
          in: header
          required: true
          description: Unix 秒級時間戳；與閘道時間的差距不得超過 60 秒。
          schema:
            type: string
        - name: SIGN
          in: header
          required: true
          description: 使用實際對外請求路徑、Query 與 Body 計算的 HMAC-SHA512 十六進位簽名。
          schema:
            type: string
        - name: X-User-Wallet-Address
          in: header
          required: true
          description: 目標終端使用者的錢包地址；閘道會驗證該錢包屬於目前 Broker。
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - token_id
                - side
              properties:
                token_id:
                  type: string
                side:
                  type: string
                  enum:
                    - BUY
                    - SELL
                price:
                  type: string
                size:
                  type: string
                total_cost:
                  type: string
                order_type:
                  type: string
                  enum:
                    - GTC
                    - GTD
                    - FOK
                    - FAK
                  description: 訂單有效方式：GTC、GTD、FOK 或 FAK
                order_mode:
                  type: string
                  enum:
                    - LIMIT
                    - MARKET
                  description: 下單模式：LIMIT 或 MARKET
                client_order_id:
                  type: string
                post_only:
                  type: boolean
                sell_all:
                  type: boolean
                expire_time:
                  type: integer
      responses:
        '200':
          description: 請求成功
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PlaceOrderAcceptResp'
        '400':
          description: 請求參數錯誤
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: 認證失敗
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '503':
          description: 服務暫時不可用
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
        - BrokerAPIKey: []
components:
  schemas:
    PlaceOrderAcceptResp:
      type: object
      properties:
        client_order_id:
          type: string
        created_at:
          type: integer
        order_id:
          type: string
        status:
          type: string
          enum:
            - processing
      description: 回應物件。
    Error:
      type: object
      description: 錯誤回應。
      properties:
        label:
          type: string
          example: INVALID_ARGUMENT
        message:
          type: string
          example: invalid request
  securitySchemes:
    BrokerAPIKey:
      type: apiKey
      in: header
      name: KEY
      description: Broker API Key，由專案管理流程建立。

````

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