{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Bulk Purchase Request",
  "description": "Request to buy the same options contract across multiple end-user accounts in a single call",
  "type": "object",
  "properties": {
    "headers": {
      "type": "object",
      "properties": {
        "Deriv-App-ID": {
          "type": "string",
          "description": "Application identifier used for Personal Access Token (PAT) authentication. No OAuth access token is required for this endpoint — each account is authorized by its own PAT in the request body."
        },
        "Content-Type": {
          "type": "string",
          "enum": ["application/json"],
          "description": "Content type"
        }
      },
      "required": ["Deriv-App-ID", "Content-Type"]
    },
    "body": {
      "type": "object",
      "properties": {
        "contract_parameters": {
          "type": "object",
          "description": "Opaque options contract parameters applied to every account in the request (e.g. contract_type, symbol, amount, duration). Passed through unmodified to the trading backend, which validates the contents.",
          "additionalProperties": true
        },
        "accounts": {
          "type": "array",
          "description": "List of end-user token / account pairs to buy the contract for. Duplicate pairs are honoured and result in repeated purchases, matching the legacy behaviour.",
          "minItems": 1,
          "maxItems": 100,
          "items": {
            "type": "object",
            "properties": {
              "token": {
                "type": "string",
                "description": "End-user Personal Access Token (PAT) authorizing the purchase on the paired account. Never logged or forwarded downstream.",
                "minLength": 1,
                "maxLength": 512
              },
              "account_id": {
                "type": "string",
                "description": "Options trading account the contract should be bought for. Must belong to the token's owner.",
                "minLength": 1,
                "maxLength": 64
              }
            },
            "required": ["token", "account_id"],
            "additionalProperties": false
          }
        }
      },
      "required": ["contract_parameters", "accounts"]
    }
  },
  "required": ["headers", "body"]
}