{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "#/components/schemas/BalanceResponse", "title": "BalanceResponse", "type": "object", "description": "Player wallet balance response.", "properties": { "success": { "type": "boolean", "description": "Whether the request succeeded.", "example": true }, "playerId": { "type": "string", "description": "The player's unique identifier.", "example": "player-500123" }, "balance": { "type": "number", "format": "double", "description": "Current wallet balance.", "example": 125.0 }, "currency": { "type": "string", "description": "ISO 4217 three-letter currency code.", "example": "USD" } } }