Hi @GaryTaft,

Developer Keys are something that only Canvas admins have access to.  If one is needed for an integration you're interested in using, I'd suggest getting contact with your school/institution Canvas administrators, usually located in the eLearning / IT / Digital Education areas.  They should be able to guide you through whatever processes exist for that sort of thing at your school/institution and get your integration up and running if everything is approved.

Hope this info helps!

-Chris