Did you get outside contributions yet? I'm asking because it is dual licensed agpl and commercial (just like a recent project I'm working on), and am wondering how contributors react to the cla.

Btw I like your short and clear CLA! Did you check the wording of the cla with a lawyer? In my project I wanted to replace the perpetual license granted by contributors by 'a license granted as long as the software is also proposed under the agpl', but that might make it too complicated to still keep it succinct and legally clear.