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

# Cancel an order

> Cancels a queued managed order or an active open limit order. Terminal orders cannot be cancelled.



## OpenAPI

````yaml /openapi/openapi.json post /execution/orders/{orderId}/cancel
openapi: 3.0.2
info:
  title: AGG API
  version: 1.0.0
  description: >-
    Prediction market aggregator REST API — authentication, users, venue events,
    venue markets, orderbooks, charts, and execution workflows.
servers:
  - url: https://api.agg.market
    description: Production
  - url: https://api.staging.agg.market
    description: Staging
security: []
paths:
  /execution/orders/{orderId}/cancel:
    post:
      tags:
        - Execution
      summary: Cancel an order
      description: >-
        Cancels a queued managed order or an active open limit order. Terminal
        orders cannot be cancelled.
      operationId: cancelManagedOrder
      parameters:
        - name: orderId
          in: path
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties: {}
      responses:
        '200':
          description: '200'
          content:
            application/json:
              schema:
                type: object
                required:
                  - quoteId
                  - orderIds
                  - status
                properties:
                  quoteId:
                    type: string
                    nullable: true
                  orderIds:
                    type: array
                    items:
                      type: string
                  status:
                    type: string
                    enum:
                      - cancelled
                      - cancel_pending
        '401':
          description: '401'
          content:
            application/json:
              schema:
                type: object
                required:
                  - message
                properties:
                  message:
                    type: string
        '403':
          description: '403'
          content:
            application/json:
              schema:
                type: object
                required:
                  - message
                properties:
                  message:
                    type: string
        '404':
          description: '404'
          content:
            application/json:
              schema:
                type: object
                required:
                  - message
                properties:
                  message:
                    type: string
        '409':
          description: '409'
          content:
            application/json:
              schema:
                type: object
                required:
                  - message
                properties:
                  message:
                    type: string
      security:
        - appId: []
          bearerAuth: []
components:
  securitySchemes:
    appId:
      type: apiKey
      in: header
      name: x-app-id
      description: Your application ID. Required for all app-tier and user-tier routes.
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: >-
        JWT access token returned by POST /auth/verify. Required for user-tier
        routes.

````