You can use our rates.

XML format

Current version: https://www.alfa.cash/api/rates

TXT format

Current version: https://www.alfa.cash/api/rates/txt

Deprecated version

Only short names and gateway codes are available, please change URL to Current version

Short payment gateway names: https://www.alfa.cash/exchange/export/rates/txt/short
Payment Gateway IDs: https://www.alfa.cash/exchange/export/rates/txt/long

P.S.

If there is any inaccuracy in our export rate file, please consider creating a ticket for that issue.