curl --request GET \
  --url https://tonapi.io/v2/storage/providers

{
  "providers": [
    {
      "address": "0:FD595F36B4C1535BEC8461490D38EBB9AE3C38DD6ACE17CA63ABE2C6608BE159",
      "accept_new_contracts": true,
      "rate_per_mb_day": 50000000,
      "max_span": 604800,
      "minimal_file_size": 64,
      "maximal_file_size": 10485760
    }
  ]
}

{
  "error": "<string>",
  "error_code": 123,
  "details": {
    "required": 123,
    "available": 123
  }
}