Admin access error with remote_api handler on AppEngine

Question

Trying to configure my AppEngine app's remote_api, I set up app.yaml with the required:

builtins:
    - remote_api: on

Then deployed to app engine. Now, I am system administrator (currently Owner) of this application, but when I access https://myapp.appspot.com/_ah/remote_api, I get the message:

`You must be logged in as an administrator to access this.`.  

Why does this happen?

For completeness, I asked my app's owner and he got the same message. We were both logged in at the time.

Answer 1

The remote_api URL is not meant to be used from a browser.

Are you using the remote_api_shell.py script?

Answer 2

You must be logged in with and the Google (Gmail?) account that has administrator privileges.