> ## 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.

> ## Agent Instructions
> To integrate AGG, start with Quickstart: REST (https://docs.agg.market/quickstart/rest), then Order lifecycle & statuses (https://docs.agg.market/concepts/order-lifecycle).
> Track every trade until it reaches a terminal status. Before retrying a failed or timed-out call, read Errors, retries & idempotency (https://docs.agg.market/concepts/errors).
> The API reference is generated from https://docs.agg.market/openapi/openapi.json.

# Place a paper trading order



## OpenAPI

````yaml /openapi/openapi.json post /apps/{appId}/paper-trading/accounts/{accountId}/orders
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
security: []
tags:
  - name: Authentication
    description: Sign users in and manage their session tokens.
  - name: Markets
    description: Find events, markets and outcomes to trade.
  - name: Market Data
    description: Live orderbooks, prices, charts and scores for those markets.
  - name: Trading
    description: Quote, place, sign, track and cancel orders.
  - name: Portfolio
    description: A user's orders, positions, balances and activity.
  - name: Funding
    description: Deposit addresses, withdrawals, balance refills and fiat on-ramp.
  - name: Users
    description: The signed-in user's profile, linked accounts, KYC and venue keys.
  - name: Hosted Venue Accounts
    description: Provision, fund and withdraw from venue accounts hosted for the user.
  - name: Webhooks
    description: Configure and operate webhook delivery to your server.
  - name: Partner Admin
    description: Server-side reads across your app's users, orders and analytics.
  - name: Paper Trading
    description: Simulated accounts and orders for testing without real funds.
  - name: News
    description: News feeds linked to markets.
  - name: Correlated Markets
    description: Markets related to a given market and the effect of its resolution.
paths:
  /apps/{appId}/paper-trading/accounts/{accountId}/orders:
    post:
      tags:
        - Paper Trading
      summary: Place a paper trading order
      operationId: placePaperTradingOrder
      parameters:
        - name: appId
          in: path
          required: true
          schema:
            type: string
        - name: accountId
          in: path
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - venueMarketOutcomeId
                - side
              properties:
                venueMarketOutcomeId:
                  type: string
                side:
                  type: string
                  enum:
                    - buy
                    - sell
                spendRaw:
                  pattern: ^[0-9]+$
                  type: string
                spend:
                  exclusiveMinimum: true
                  type: number
                  minimum: 0
                shares:
                  exclusiveMinimum: true
                  type: number
                  minimum: 0
                slippageBps:
                  minimum: 0
                  maximum: 10000
                  type: number
                clientOrderId:
                  minLength: 1
                  maxLength: 160
                  type: string
      responses:
        '201':
          description: '201'
          content:
            application/json:
              schema:
                type: object
                required:
                  - id
                  - accountId
                  - venue
                  - venueMarketId
                  - venueMarketOutcomeId
                  - marketQuestion
                  - outcomeLabel
                  - side
                  - status
                  - clientOrderId
                  - requestedSpendRaw
                  - requestedSpend
                  - requestedShares
                  - filledShares
                  - avgPrice
                  - slippageBps
                  - notionalRaw
                  - notional
                  - cashDeltaRaw
                  - cashDelta
                  - realizedPnlRaw
                  - realizedPnl
                  - rejectionReason
                  - createdAt
                properties:
                  id:
                    type: string
                  accountId:
                    type: string
                  venue:
                    type: string
                  venueMarketId:
                    type: string
                  venueMarketOutcomeId:
                    type: string
                  marketQuestion:
                    type: string
                  outcomeLabel:
                    type: string
                  side:
                    type: string
                    enum:
                      - buy
                      - sell
                  status:
                    type: string
                    enum:
                      - filled
                      - rejected
                  clientOrderId:
                    type: string
                    nullable: true
                  requestedSpendRaw:
                    type: string
                    nullable: true
                  requestedSpend:
                    type: number
                    nullable: true
                  requestedShares:
                    type: number
                    nullable: true
                  filledShares:
                    type: number
                  avgPrice:
                    type: number
                    nullable: true
                  slippageBps:
                    type: number
                    nullable: true
                  notionalRaw:
                    type: string
                  notional:
                    type: number
                  cashDeltaRaw:
                    type: string
                  cashDelta:
                    type: number
                  realizedPnlRaw:
                    type: string
                  realizedPnl:
                    type: number
                  rejectionReason:
                    type: string
                    nullable: true
                  createdAt:
                    type: string
        '400':
          description: '400'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
        '401':
          description: '401'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
        '403':
          description: '403'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
        '404':
          description: '404'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
        '503':
          description: '503'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
      security:
        - appApiKey: []
components:
  schemas:
    ErrorMessage:
      type: object
      required:
        - message
      properties:
        message:
          type: string
  securitySchemes:
    appApiKey:
      type: apiKey
      in: header
      name: x-app-api-key
      description: App-scoped API key for programmatic app management.

````