goplay

Usage:

code, err := goplay.Fetch("https://play.golang.org/p/HmnNoBf0p1z")
if err != nil {
    // ...
}
result, err := goplay.Compile(code)
if err != nil {
    // ...
}
fmt.Println(result.Errors)
fmt.Println(result.Stdout)
fmt.Println(result.Stderr)