The API should have versioning.

[ctriroli]

There should be an endpoint-identificator or a parameter that allows versioning of the api requests.
That way old api versions and newer api versions could coexist within the same codebase.

[spier]

It is an almost religious discussion whether or not APIs should be versioned. Therefore I don't think that there is right or wrong answer to this - it depends :)

I believe that as long as the ZEIT API is in Beta, it can easily change its signature without necessarily requiring a new version. Of course it would be nice to let all Application developers know when that happens, so that we know when our Apps will break.