https://golang.org/pkg/encoding/gob/
Gob is apparently out of the box with Go.
I'm still learning through Go, there's so much available OOTB that I love about Go. I wish other languages would take Go's Standard Library as a good example of things to include with a language. I can do web applications entirely with Go's standard libraries. Course then you gotta worry about storing data in some database, but those libraries are usually done by Database vendors or the language community.