> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cryptoprocessing.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Exchange callbacks

## Processing exchange callbacks

Exchange callbacks are sent whenever the status of an exchange created via the [/exchange/fixed](/api-reference/endpoints/exchange-fixed) or [/exchange/now](/api-reference/endpoints/exchange-now) endpoint changes. The callback format is the same for exchanges created with either endpoint.

When you receive a callback with `"status": "confirmed"`, the exchange has been successfully completed. At this stage, your balances for the affected currencies have already been updated. You can retrieve your current account balances via the [/accounts/list](/api-reference/endpoints/accounts-list) endpoint.

## Exchange callback payload example

Below is an example of a callback for a confirmed exchange:

```json highlight={31} theme={null}
{
  "id": 134782394,
  "type": "exchange",
  "currency_sent": {
    "currency": "BTC",
    "amount": "0.00010000"
  },
  "currency_received": {
    "currency": "ETH",
    "amount": "0.00326418"
  },
  "transactions": [
    {
      "id": 9628634,
      "currency": "BTC",
      "currency_to": "ETH",
      "transaction_type": "exchange",
      "type": "exchange",
      "amount": "0.00010000",
      "amount_to": "0.00326418"
    }
  ],
  "fees": [
    {
      "type": "fee_crypto_exchange_to_crypto",
      "currency": "BTC",
      "amount": "0.00000200"
    }
  ],
  "error": "",
  "status": "confirmed"
}
```