Using json.Decoder to decode API call.

main.go

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
)

// So ungefähr
type Contrib struct {
	Id    string `json:"userid"`
	Name  string `json:"user"`
	Title string
}

type Query struct {
	Contribs []Contrib `json:"usercontribs"`
}

type Response struct {
	Query Query
}

const (
	url = "http://www.funtoo.org/api.php?action=query&list=usercontribs&format=json&ucuser=%s&ucdir=newer"
)

func main() {
	
	res, err := http.Get(fmt.Sprintf(url,"jubalh"))

	if err != nil {
		panic(err)
	}

	r := Response{}
	dec := json.NewDecoder(res.Body)
	
	if err := dec.Decode(&r); err != nil {
		panic(err)
	}
	
	fmt.Printf("%v\n", len(r.Query.Contribs))
}