Using the SDK and the API in general will remain as of today: free and accessible for everyone.
IN the same way, we don't want to implement an API key mechanism and all that kind of stuff.
However, due to misuse of the API through various SDKs, we will now force all language clients to have a valid User Agent so that we can reach out in case of problems.
For now, We will only require an app name for the user agent.
What