Over the years, I've tried a number of different approaches, but offering quality data for free has always proven the most popular. There are now around 20 such APIs offering quite a few different approaches. (The interview has been edited slightly for clarity.) About ExchangeRate-APIĬhris: How is ExchangeRate-API different from other online exchange-rate services? What motivates you to provide this service?ĭavid: When I started ExchangeRate-API with a friend in 2010, we built and released it for free because we really needed this service for another project and couldn't find one despite extensive googling. Below the interview, you can find scripts and usage instructions. Recently, David over at reached out to me to say, "the free API you mentioned (Fixer) has been bought by CurrencyLayer and had its no-signup/unlimited access deprecated." He also told me, "I run a free API called that has the same JSON format as the original Fixer, doesn't require any signup, and allows unlimited requests."Īfter exchanging a few emails, we decided to turn our conversation into an interview. I showed how two exchange rate sites, fixer.io and (now ), could provide the data I needed, allowing me to convert between Indian rupees (INR) and Canadian dollars (CAD) using the former, and Chilean pesos (CLP) and Canadian dollars using the latter. Last year, I wrote about using the Groovy programming language to access foreign exchange rate data from an API to simplify my expense records.
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