> ## 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.

# Set a paper trading account cash balance



## OpenAPI

````yaml /openapi/openapi.json patch /apps/{appId}/paper-trading/accounts/{accountId}/balance
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:
  /apps/{appId}/paper-trading/accounts/{accountId}/balance:
    patch:
      tags:
        - Execution
      summary: Set a paper trading account cash balance
      operationId: setPaperTradingBalance
      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
              properties:
                balanceRaw:
                  pattern: ^[0-9]+$
                  type: string
                balance:
                  minimum: 0
                  type: number
                reason:
                  maxLength: 500
                  type: string
      responses:
        '200':
          description: '200'
          content:
            application/json:
              schema:
                type: object
                required:
                  - account
                  - adjustment
                properties:
                  account:
                    type: object
                    required:
                      - id
                      - appId
                      - name
                      - externalId
                      - currency
                      - startingBalanceRaw
                      - startingBalance
                      - cashBalanceRaw
                      - cashBalance
                      - realizedPnlRaw
                      - realizedPnl
                      - kycStatus
                      - kycVerified
                      - status
                      - createdAt
                      - updatedAt
                    properties:
                      id:
                        type: string
                      appId:
                        type: string
                      name:
                        type: string
                        nullable: true
                      externalId:
                        type: string
                        nullable: true
                      currency:
                        type: string
                      startingBalanceRaw:
                        type: string
                      startingBalance:
                        type: number
                      cashBalanceRaw:
                        type: string
                      cashBalance:
                        type: number
                      realizedPnlRaw:
                        type: string
                      realizedPnl:
                        type: number
                      kycStatus:
                        type: string
                        enum:
                          - verified
                      kycVerified:
                        type: boolean
                        enum:
                          - true
                      status:
                        type: string
                        enum:
                          - active
                          - archived
                      createdAt:
                        type: string
                      updatedAt:
                        type: string
                  adjustment:
                    type: object
                    required:
                      - id
                      - accountId
                      - type
                      - amountRaw
                      - amount
                      - previousCashBalanceRaw
                      - previousCashBalance
                      - newCashBalanceRaw
                      - newCashBalance
                      - reason
                      - createdAt
                    properties:
                      id:
                        type: string
                      accountId:
                        type: string
                      type:
                        type: string
                        enum:
                          - set_balance
                          - reset
                      amountRaw:
                        type: string
                      amount:
                        type: number
                      previousCashBalanceRaw:
                        type: string
                      previousCashBalance:
                        type: number
                      newCashBalanceRaw:
                        type: string
                      newCashBalance:
                        type: number
                      reason:
                        type: string
                        nullable: true
                      createdAt:
                        type: string
        '400':
          description: '400'
          content:
            application/json:
              schema:
                type: object
                required:
                  - message
                properties:
                  message:
                    type: string
        '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
      security:
        - appApiKey: []
components:
  securitySchemes:
    appApiKey:
      type: apiKey
      in: header
      name: x-app-api-key
      description: App-scoped API key for programmatic app management.

````