go get github.com/jamesog/cloudflare-go

package main

import (
	"fmt"

	"github.com/jamesog/cloudflare-go"
)

var api *cloudflare.API

func main() {
	// Construct a new API object
	api = cloudflare.New(os.Getenv("CF_API_KEY"), os.Getenv("CF_API_EMAIL"))

	// Fetch the list of zones on the account
	zones, err := api.ListZones()
	if err != nil {
		fmt.Println(err)
	}
	// Print the zone names
	for _, z := range zones {
		fmt.Println(z.Name)
	}
}