GO，GAE，远程api和本地数据存储

I am completely new to GAE using Go (actually using anything. new to GAE). and I am completely lost. I have a small application, whose yaml file looks like this

application: my-niceapp-636
version: beta
runtime: go
api_version: go1

handlers:

- url: /_ah/remote_api
  script: _go_app
  login: admin

- url: /static
  static_dir: static
  application_readable: true

- url: /.*
  script: _go_app
  login: admin

I am writing it in GO. and followed this guide here

https://developers.google.com/appengine/docs/go/tools/remoteapi#enabling_remote_api

in my main file I added this import -- _ "appengine/remote_api" and when I hit the URL

http://localhost:8080/_ah/remote_api 

i see this ->

This request did not contain a necessary header.

However when I hit the same URL in remote (in the appspot domain) the default index page is served. I do not understand why is that. is it normal? Maybe yes, but for noob like me not at all.

I have copied the entire code of the go_appengine/demos/remote_api/datastore_info.go to my own gae application dir and renamed it as import_data.go and changed the part that reads from a file the password instead hard coded the password in the file. that is the only difference. I give you that part of code bellow

var (
    host         = flag.String("host", "", "hostname of application")
    email        = flag.String("email", "", "email of an admin user for the application")
    //passwordFile = flag.String("password_file", "", "file which contains the user's password")
)
.
.
.
.
/*if *passwordFile == "" {
        log.Fatalf("Required flag: -password_file")
    }*/

    //p, err := ioutil.ReadFile(*passwordFile)
    /*if err != nil {
        log.Fatalf("Unable to read password from %q: %v", *passwordFile, err)
    }*/
    password := "xxxyyyzzz112233"//strings.TrimSpace(string(p))

Everything else remains the same. After all these when I am trying to run it via

goapp run import_data.go -email myemail@gmail.com -host my-niceapp-636.appspot.com

I get this error ---

Failed to create context: unable to contact server: token not found: want "7790585182047258325";

after which it spits out the whole index file that we will usually see when we visit the app.

I am completely lost and to be truthful I have had much better experience with Go involving linode or Amazon. Shame on google that they made things so complicated.

How, if needed, am I suppose to access the remote data store from my localhost application?

Can any body please help me?

Thanks in advance