https://www.pistack.xyz/tags/web-service/ Recent content in Web-Service on Pi Stack Hugo en-us Tue, 09 Jun 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-06-09-self-hosted-currency-exchange-rate-apis-frankfurter-exchange-api-guide/ Tue, 09 Jun 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-06-09-self-hosted-currency-exchange-rate-apis-frankfurter-exchange-api-guide/ <h2 id="introduction">Introduction</h2> <p>Currency exchange rate APIs are the backbone of international e-commerce, financial dashboards, travel apps, and accounting software. While commercial providers like OpenExchangeRates and CurrencyLayer charge hundreds of dollars per month for production access, open-source self-hosted alternatives give you unlimited API calls with full data ownership and zero recurring costs. These tools pull exchange rates from central banks and financial data providers, cache them locally, and serve them through a clean REST API.</p>