I’m talking to a new ActivityPub server library that’s releasing its first alpha soon, and they’ve set up a hosted sandbox for testing. Naturally, this test instance will be unfederated because it’s just meant for demo purposes.
It did get me thinking though: Is there no sandbox version of the fediverse network out there? A kind of emulation of the real ActivityPub network, made of bot accounts, to which developers can federate their apps for testing.
My understanding is that Mastinator was federated with real servers and proxied real user accounts instead of creating purely artificial bot accounts to simulate actors.
What I meant to express by “a hunch based on what” is that I don’t know what the actual threat scenarios are. However, I suspect that there are several non-trivial ones. So one shouldn’t launch such a “sandbox network” on the internet without doing a careful analysis. Such an analysis can only occur once one has a firm concept of the sandbox to use.