# Get exchange currencies

Returns receive (crypto) and spend (fiat) currencies available for exchange. Requires merchant authentication (merchant-api-key, merchant-client-id) and optionally an Authorization Bearer token (SDK JWT).

Endpoint: GET /exchange/currencies
Version: 1.0.0
Security: MerchantAuth

## Header parameters:

  - `merchant-client-id` (string, required)
    Your merchant client identifier (must be kept secure)

  - `Authorization` (string)
    Bearer JWT from public token (optional for server-to-server)
    Example: "eyJhbGciOiJSUzI1NiIsImtpZCI6InNkay1rZXktMjAyNS0wMyJ9..."

## Query parameters:

  - `operationType` (string, required)
    Operation type (e.g. S = Sell, B = Buy, FF = Fiat to Fiat, CC = Crypto to Crypto)
    Example: "S"

  - `countryCode` (string, required)
    ISO country code (e.g. US, CA)
    Example: "US"

## Response 200 fields (application/json):

  - `success` (boolean)
    Example: true

  - `code` (string)
    Example: "ok"

  - `data` (object)
    Receive and spend currencies for exchange

  - `data.receiveCurrencies` (array)
    Cryptocurrencies that can be received

  - `data.receiveCurrencies.id` (integer)
    Currency identifier
    Example: 1

  - `data.receiveCurrencies.code` (string)
    Currency code (e.g. USDT, USD)
    Example: "USDT"

  - `data.receiveCurrencies.description` (string)
    Full description of the currency
    Example: "Tether (Omni)"

  - `data.receiveCurrencies.shortName` (string,null)
    Short display name (null for crypto)

  - `data.receiveCurrencies.symbol` (string)
    Currency symbol
    Example: "USDT"

  - `data.receiveCurrencies.type` (string)
    Currency type (C = Crypto, F = Fiat)
    Example: "C"

  - `data.spendCurrencies` (array)
    Fiat (or spend) currencies

## Response 400 fields (application/json):

  - `code` (string)
    Error code
    Example: "INVALID_INPUT"

  - `message` (string)
    Error message
    Example: "Invalid JSON in request body"

## Response 401 fields (application/json):

  - `code` (string)
    Error code
    Example: "INVALID_INPUT"

  - `message` (string)
    Error message
    Example: "Invalid JSON in request body"

## Response 500 fields (application/json):

  - `code` (string)
    Error code
    Example: "INVALID_INPUT"

  - `message` (string)
    Error message
    Example: "Invalid JSON in request body"