Google Drive OAuth Playground: Realtime Get API - Invalid Value Error - api

Question

I trying to use the Google OAuth 2.0 playground to query for realtime updates on a Google Docs File ID. For every request using either the get or update Realtime api calls I receive an error and have tried sending in numerous file ids. Do you have any advice as to how to use this API?
Below is the URL I am sending along with the error returned:
https://www.googleapis.com/drive/v2/files/1IT1qIuM6QsqV7D--69uv0sn4OSQ24UQKos3x0P3BQjc/realtime
Error Returned:
GET /drive/v2/files/1IT1qIuM6QsqV7D--69uv0sn4OSQ24UQKos3x0P3BQjc/realtime HTTP/1.1
Host: www.googleapis.com
Content-length: 0
Authorization: Bearer ya29.LgDc0oNUU_4cuhoAAAAjT4pqiLwlIpoRV7ll_QEJp1QayB49KOwIYKHVK5rMww
HTTP/1.1 400 Bad Request
Content-length: 172
X-xss-protection: 1; mode=block
X-content-type-options: nosniff
Expires: Wed, 25 Jun 2014 10:08:21 GMT
Server: GSE
Cache-control: private, max-age=0
Date: Wed, 25 Jun 2014 10:08:21 GMT
X-frame-options: SAMEORIGIN
Content-type: application/json; charset=UTF-8
{
"error": {
"code": 400,
"message": "Invalid Value",
"errors": [
{
"domain": "global",
"message": "Invalid Value",
"reason": "invalid"
}
]
}
}
Thanks,
Michael

Answer 1

You need to provide your API key at the end. You can see what the requests should look like in the API explorer.
Note however that realtime documents are scoped to a particular app, so anything you've created in your app won't show up in the API explorer. You can update and the get it from that using the explorer app though.