Create new gist with Github API v3 using curl - json

Question

After fighting for quite some time for posting a private gist to Github using their API V3 I almost gave up. Almost. May be some one have also faced similar problem or know what might be the reasoning of the following behavior:
Right now the curl command looks like following:
curl -H "Authorization: bearer MY_AUTHORIZATION_TOKE" -H "Accept: application/json" -H "Content-type: application/json" -X POST -d '{"public":false,"files":{"test.txt":{"content":"String file contents"}}}' https://api.github.com/gists
I also tried
curl -H "Authorization: bearer MY_AUTHORIZATION_TOKE" -X POST -d '{"public":false,"files":{"test.txt":{"content":"String file contents"}}}' https://api.github.com/gists
I am able to create gist without authorization token using exactly same data:
curl -X POST -d '{"public":true,"files":{"test.txt":{"content":"String file contents"}}}' https://api.github.com/gists
But in that case it will be anonymous
Same results if I am truing to post it as public
In any case Github returns me
HTTP/1.1 404 Not Found
{
"message": "Not Found"
}
I am pretty sure I am authorized, as curl -H "Authorization: bearer MY_AUTHORIZATION_TOKE" https://api.github.com/user returns me my user details.
Application scope is as:
https://github.com/login/oauth/authorize?client_id=...&scope=gist
So, it should have both read and write permission.

Answer 1

Your OAuth2 token doesn't appear to have the required gist scope.
If you run the curl commands with the -v argument you can see the scope sent to request (X-OAuth-Scopes header) and the scope required for the request (X-Accepted-OAuth-Scopes header) to successfully be performed using the token sent.
If you don't see gist listed in the X-OAuth-Scopes header value then that is your problem.