caste shows the content of a pastebin.
This happens every day on Freenode:
<me> jrandom: pastebin the error message you get.
<jrandom> http://pastebin.com/Yas84GQN
Opening that URL gives a lot of things around the content. The URL you really want is:
<jrandom> http://pastebin.com/raw/Yas84GQN
This project allows you to run:
% caste http://pastebin.com/Yas84GQN
to view the paste contents, as though by
% curl -s http://pastebin.com/raw/Yas84GQN
Currently a few pastebins are known. I'll add more as I run into them in practice.
Portmanteau of cat(1) and paste (n.).
The only similar project I'm aware of is https://github.com/e36freak/read_paste.