Currency APIs
tiffany352 opened this issue · comments
Right now only the ECB and blockchain.info APIs are used which are totally free and don't require an API key at all. In the past there was a strong requirement on this because data was fetched in client. But now the data is aggregated by a batch job run on the backend (rinkcalc.app), so any API could be used, as long as I could afford to pay for it (some of them are outrageously expensive...)
Some decent options are below. A lot of the ones I found were simply flipping the ECB data behind a pay wall so it's important to find ones that actually use multiple data sources and will be robust to future problems like the ECB deleting a currency from their API (as happened with the Ruble).
| Provider | Free tier | First paid tier | Currencies | Notes |
|---|---|---|---|---|
| https://currencyapi.com/ | Yes | $10/month | "170+" | No sources listed |
| https://currencylayer.com/ | Yes | $10/month | "168" | No sources listed |
| https://www.abstractapi.com/exchange-rate-api | Yes | $9/month | A bunch | High API quota, but no sources listed |
| https://api.forex/ | Yes | $10/month | ??? | Robust sources, high API quota |
| https://fixer.io/ | Yes | $10/month | ??? | No sources listed |
| https://exchangeratesapi.io/ | Yes | $10/month | "200+" | No sources listed |