​
Basic example

{
  "name": "SimpleInvoice",
  "description": "Basic invoice information",
  "fields": [
    {
      "name": "invoice_number",
      "description": "Unique invoice identifier",
      "type": "string"
    },
    {
      "name": "total_amount",
      "description": "Total invoice amount",
      "type": "number"
    },
    {
      "name": "issue_date",
      "description": "Invoice issue date",
      "type": "date"
    },
    {
      "name": "due_date",
      "description": "Payment due date",
      "type": "date"
    }
  ]
}

​
With arrays and objects

{
  "name": "DetailedInvoice",
  "description": "Detailed invoice with line items and customer information",
  "fields": [
    {
      "name": "invoice_number",
      "description": "Unique invoice identifier",
      "type": "string"
    },
    {
      "name": "customer",
      "description": "Customer details",
      "type": "object",
      "fields": [
        {
          "name": "name",
          "description": "Customer name",
          "type": "string"
        },
        {
          "name": "email",
          "description": "Customer email",
          "type": "email"
        },
        {
          "name": "phone",
          "description": "Customer phone",
          "type": "phone"
        }
      ]
    },
    {
      "name": "line_items",
      "description": "Individual invoice items",
      "type": "array",
      "fields": [
        {
          "name": "description",
          "description": "Item description",
          "type": "string"
        },
        {
          "name": "quantity",
          "description": "Quantity of items",
          "type": "number"
        },
        {
          "name": "unit_price",
          "description": "Price per unit",
          "type": "number"
        }
      ]
    }
  ]
}