curl --request DELETE \
  --url https://api-sandbox.y.uno/v1/banking/accounts/{account_id} \
  --header 'private-secret-key: <api-key>' \
  --header 'public-api-key: <api-key>'

{
  "id": "acct_aa0e8400-e29b-41d4-a716-446655440000",
  "entity_id": "ent_660e8400-e29b-41d4-a716-446655440000",
  "onboarding_id": "onb_990e8400-e29b-41d4-a716-446655440000",
  "account_id": "550e8400-e29b-41d4-a716-446655440000",
  "provider": {
    "account_id": "col_bank_account_789"
  },
  "account_type": "CHECKING",
  "status": "CLOSED",
  "account_number": "1234567890",
  "routing_number": "123456789",
  "iban": null,
  "currency": "USD",
  "balance": {
    "available": 0,
    "current": 0,
    "pending": 0
  },
  "account_details": {
    "account_name": "John Doe - Checking",
    "sort_code": null,
    "bsb": null,
    "swift": null
  },
  "payment_rails": {
    "incoming": [
      "ACH",
      "WIRE"
    ],
    "outgoing": [
      "ACH",
      "WIRE"
    ]
  },
  "supports_book_transfers": true,
  "created_at": "2026-02-01T10:10:00Z",
  "updated_at": "2026-02-25T14:30:00Z"
}