Is there a sandbox version of the Github api v3 for testing apps?

Question

I am developing a Github v3 api app, and I need to be able to test it's functionality while developing without mutating actual data. Is there a sandbox api available?

Answer 1

The right way is simply to create one's own (public) sandbox repo to play/test with.

Even the Spoon-Knife repo from octocat GitHub account isn't available for direct contribution, but is only there for testing forks.