just wondering, is there already an open source repo of go libs for working with the rest api?

All Fleet is open source 🙂 https://github.com/fleetdm/fleet/tree/main/server/service You can take a look at client_*.go files that expose the API as Go methods: E.g. to list Flee teams: https://github.com/fleetdm/fleet/blob/791ce63c73ed4c93ce9fed2f4480d587315a4791/server/service/client_teams.go#L13C18-L13C27