[jsolson]

That's common to most projects released by Googlers. Options are either a getting the IP officially assigned over to yourself or releasing it under a Google copyright with a CLA: https://opensource.google.com/docs/creating/

The latter is lower friction, in my opinion.

This is especially common for "personal" projects that people end up working on or using on the clock.

I don't know if this was the case with Cue specifically (this is the first I've heard of the project, but less boilerplate in my JSON has some appeal).