The VineOS Currency Conversion API from Vine Global converts over 165 currencies. The API uses JSON over HTTP and authenticates via API Key. Currency rates are updated every hour, and the API is free and open to the public to use. See the API documentation for API request definitions and code samples.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.