Pick USD or EUR and a date range to see the CBRT selling rate as a chart or table. Optionally carry values across weekends and holidays.
Source: TCMB daily bulletin. This endpoint accumulates the archive; no exclusivity claim. For invoices / accounting, source URL + content hash ship in the API response.
Choose series and dates, then Query. You get a stats card plus a chart or table. Next: wire the same endpoint into your software via API.