curl --request POST \
  --url https://api.klavis.ai/sandbox/moneybird/{sandbox_id}/initialize \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "ledger_accounts": [
    {
      "name": "Sandbox Sales Revenue",
      "account_type": "revenue",
      "account_id": "8000"
    },
    {
      "name": "Sandbox Consulting Revenue",
      "account_type": "revenue",
      "account_id": "8100"
    },
    {
      "name": "Sandbox Product Revenue",
      "account_type": "revenue",
      "account_id": "8200"
    }
  ],
  "contacts": [
    {
      "company_name": "Sandbox Tech Solutions B.V.",
      "phone": "+31201234567",
      "address1": "Herengracht 123",
      "city": "Amsterdam",
      "zipcode": "1012 AB",
      "country": "NL",
      "sepa_iban": "NL91ABNA0417164300"
    },
    {
      "company_name": "Sandbox Digital Marketing GmbH",
      "phone": "+4930123456",
      "address1": "Friedrichstraße 50",
      "city": "Berlin",
      "zipcode": "10117",
      "country": "DE"
    },
    {
      "firstname": "Emma",
      "lastname": "van der Berg",
      "phone": "+31207654321",
      "address1": "Prinsengracht 456",
      "city": "Amsterdam",
      "zipcode": "1016 HJ",
      "country": "NL"
    }
  ],
  "products": [
    {
      "description": "Premium Software License - Annual Subscription",
      "title": "Software License",
      "price": "2999.00",
      "currency": "EUR",
      "identifier": "SANDBOX-SOFT-001"
    },
    {
      "description": "Professional Consulting Services - Per Hour",
      "title": "Consulting",
      "price": "150.00",
      "currency": "EUR",
      "identifier": "SANDBOX-CONS-001"
    },
    {
      "description": "Web Development Services - Per Hour",
      "title": "Web Development",
      "price": "125.00",
      "currency": "EUR",
      "identifier": "SANDBOX-DEV-001"
    }
  ],
  "projects": [
    {
      "name": "Sandbox Website Redesign 2025",
      "state": "active",
      "budget": 15000
    },
    {
      "name": "Sandbox Mobile App Development",
      "state": "active",
      "budget": 50000
    },
    {
      "name": "Sandbox Marketing Campaign Q1",
      "state": "active",
      "budget": 10000
    }
  ],
  "time_entries": [
    {
      "description": "Frontend development - Homepage redesign",
      "hours": 2,
      "billable": true
    },
    {
      "description": "Client meeting - Project kickoff",
      "hours": 1,
      "billable": true
    },
    {
      "description": "Backend API development",
      "hours": 4,
      "billable": true
    }
  ],
  "sales_invoices": [
    {
      "reference": "SANDBOX-2025-001",
      "currency": "EUR",
      "prices_are_incl_tax": false,
      "state": "draft",
      "details": [
        {
          "description": "Premium Software License - Annual",
          "price": "2999.00",
          "amount": "1"
        },
        {
          "description": "Setup and Configuration",
          "price": "500.00",
          "amount": "1"
        }
      ]
    },
    {
      "reference": "SANDBOX-2025-002",
      "currency": "EUR",
      "prices_are_incl_tax": false,
      "state": "draft",
      "details": [
        {
          "description": "Consulting Services",
          "price": "150.00",
          "amount": "20"
        }
      ]
    },
    {
      "reference": "SANDBOX-2025-003",
      "currency": "EUR",
      "prices_are_incl_tax": false,
      "state": "draft",
      "details": [
        {
          "description": "Web Development Services",
          "price": "125.00",
          "amount": "40"
        },
        {
          "description": "Design Services",
          "price": "100.00",
          "amount": "15"
        }
      ]
    }
  ]
}
'

{
  "sandbox_id": "<string>",
  "status": "idle",
  "message": "<string>",
  "records_created": {}
}