KingPay Service Information

Returns a full snapshot of all supported cryptocurrencies and networks. The response is grouped by network (e.g. btc, bch, bep20) and, for token-based networks, by token ticker (e.g. usdt, bnb). Values such as minimum_transaction, minimum_fee and network_fee_estimation are retrieved from the service database and may change over time as policies and network conditions change.

GET https://api.kingpay.online/info

Use this endpoint to discover all currencies and tokens supported by your CryptAPI-like service. For each ticker you can optionally retrieve a full set of fiat prices.

Notices

This endpoint does not depend on any specific project, address or callback. It simply describes currently supported networks and assets.
The top-level object is grouped by network (e.g. btc, bch, bep20).
UTXO coins keep short tickers: btc, ltc, bch, doge. Other networks contain both their native coin and tokens under lowercase asset keys: erc20.eth, bep20.bnb, sol.sol, sol.usdc. Their tickers always use network/asset. Short native route aliases do not create additional catalog entries.
Fiat prices are derived from an internal USD price stored for each ticker and then converted into various fiat currencies.
If the internal USD price for a specific ticker is not available, the prices field will be omitted and prices_updated will be null.

Query parameters

prices string • optional default: "1"

Controls whether fiat price data is included in the response. If disabled, only asset and network metadata is returned.

"1", "true", "yes" — include fiat prices.
"0", "false", "no" — omit fiat prices.

Example: https://api.kingpay.online/info?prices=1

Response structure

The response is a JSON object where each key is a network identifier. For networks with only a native coin, the value is a single object. For token networks, the value is another object keyed by token ticker.

{
  "btc": {
    "coin": "BTC",
    "ticker": "btc",
    "contract": null,
    "minimum_transaction": 5460,
    "minimum_transaction_coin": "0.0000546",
    "minimum_fee": 546,
    "minimum_fee_coin": "0.00000546",
    "fee_percent": "1.000",
    "network_fee_estimation": "0.00000371",
    "prices_updated": "2025-12-14T18:54:50.574Z",
    "prices": {
      "USD": "88961.05",
      "EUR": "75758.25",
      "PLN": "319923.07",
      "..."
    }
  },
  "bep20": {
    "usdt": {
      "coin": "USDT",
      "ticker": "bep20/usdt",
      "contract": "0x55d398326f99059fF775485246999027B3197955",
      "minimum_transaction": 1000000,
      "minimum_transaction_coin": "1",
      "minimum_fee": 19000,
      "minimum_fee_coin": "0.000019",
      "fee_percent": "1.000",
      "network_fee_estimation": "0.000019",
      "prices_updated": "2025-12-14T18:54:50.574Z",
      "prices": {
        "USD": "1.00",
        "EUR": "0.93",
        "..."
      }
    }
  }
}

Fields for each ticker object

coin — asset symbol/name stored in the database (e.g. "BTC", "USDT").
ticker — full ticker. For native assets it is the network ticker (e.g. "btc"). For token assets it is "network/token" (e.g. "bep20/usdt").
contract — network contract address
minimum_transaction — minimum transaction amount in base units (e.g. satoshis for BTC/LTC/DOGE, or token base units for EVM/TRON tokens).
minimum_transaction_coin — minimum transaction amount in coin units (human-readable), represented as a string.
minimum_fee — minimum fee value in base units (policy floor, e.g. dust / minimum output constraints depending on network policy).
minimum_fee_coin — minimum fee value in coin units, represented as a string.
network_fee_estimation — estimated network fee in coin units (string). May be "0" if no estimation is available yet.
fee_percent — service fee percentage as a string (e.g. "1.000").
prices_updated — ISO 8601 timestamp of the last successful price update for this ticker; null if USD price is not available.
prices — object mapping fiat currency codes to string amounts (only present if fiat prices are enabled and available).