Developers

FX

Indicative rate for a currency pair

GET/fx/rates

The rate you would get selling sell for buy right now, your spread applied — the same pricing a quote uses, but nothing is locked, and the rate can move before you quote. The FX fee is not in the rate; a quote shows it. A crypto pair fills at its venue's price when exchanged, so for one this rate is a guide only. Requires fx:read.

Send sellAmount to also see what selling it would buy at this rate (before the fee).

Authentication
ApiKeyAuth
Execution
synchronous

Parameters

  • sellstringqueryrequired
    ISO 4217 code for fiat (EUR), asset ticker for crypto (USDT).

    Example: EUR

    pattern ^[A-Z0-9]{3,10}$

  • buystringqueryrequired
    ISO 4217 code for fiat (EUR), asset ticker for crypto (USDT).

    Example: EUR

    pattern ^[A-Z0-9]{3,10}$

  • sellAmountstringquery

    Example: 1000.00

    pattern ^[0-9]+(\.[0-9]+)?$

  • X-Request-Idstringheader
    Optional client correlation id; echoed back unchanged.

    max length 128

Responses

The indicative rate.

Headers

  • X-Request-Idstring
    The client's X-Request-Id if supplied, otherwise a server-generated id. Equals traceId in problems.
  • RateLimit-Limitinteger
  • RateLimit-Remaininginteger
  • RateLimit-Resetinteger
    Seconds until the window resets.

Schema application/json

  • objectstringrequired

    Allowed values: fx_rate

  • sellstringrequired
    ISO 4217 code for fiat (EUR), asset ticker for crypto (USDT).

    Example: EUR

    pattern ^[A-Z0-9]{3,10}$

  • buystringrequired
    ISO 4217 code for fiat (EUR), asset ticker for crypto (USDT).

    Example: EUR

    pattern ^[A-Z0-9]{3,10}$

  • ratestringrequired

    Example: 0.8612

  • sellAmountobject
    Echoed when you sent one.
    • valuestringrequired

      Example: 149.90

      pattern ^-?\d{1,18}(\.\d{1,18})?$

    • currencystringrequired
      ISO 4217 code for fiat (EUR), asset ticker for crypto (USDT).

      Example: EUR

      pattern ^[A-Z0-9]{3,10}$

  • buyAmountobject
    What selling sellAmount would buy at this rate, before the fee.
    • valuestringrequired

      Example: 149.90

      pattern ^-?\d{1,18}(\.\d{1,18})?$

    • currencystringrequired
      ISO 4217 code for fiat (EUR), asset ticker for crypto (USDT).

      Example: EUR

      pattern ^[A-Z0-9]{3,10}$

  • indicativebooleanrequired

    Allowed values: true

  • asOfstring (date-time)required
    RFC 3339, UTC, with millisecond precision.

    Example: 2026-09-18T10:15:30.123Z