It's clam's newest javascript Calculator-as-a-Service: the CaaSio Please Stop Edition! no but actually please stop I hate jsjails js isn't a good language stop putting one in every ctf I don't want to look at another jsjail because if I do I might vomit from how much I hate js and js quirks aren't even cool or funny or quirky they're just painful because why would you design a language like this ahhhhhhhhhhhhhhhhhhhhh

Connect to it at nc challs.actf.co 31337.