This post ranks for testing a Currency Exchange Rates API in Postman. On Zyla API Hub the matching listing is the Currency Exchange Rate API. Auth is Authorization: Bearer YOUR_API_KEY — one Hub key, subscription + quota, not pay-per-call. First API: 7-day trial or 50 requests. No Free Plan. Catalog: more than 10,000 public APIs.
Postman is optional. Import after you have a key; the contract is still HTTP. Register: zylalabs.com/register.
Request: exchange rates (USD base)
curl -H "Authorization: Bearer YOUR_API_KEY" \
"https://zylalabs.com/api/4974/currency-exchange-rate-api/6274/exchange-rates?base=USD"Required query: base (example USD). List supported codes first:
curl -H "Authorization: Bearer YOUR_API_KEY" \
"https://zylalabs.com/api/4974/currency-exchange-rate-api/6273/currencies"Hub does not publish a frozen FX tick for this listing. Copy the curls with your key — do not invent a USD/EUR print. In Postman: New → HTTP, method GET, URL = the exchange-rates path, Authorization → Bearer Token.
Go live
1. Register — 7-day trial on your first Hub API.
2. Subscribe to the Currency Exchange Rate API.
3. GET exchange-rates with base=USD. Same call in Postman.
