curl "https://api.phrase.com/v2/projects/:project_id/tags" \
  -u USERNAME_OR_ACCESS_TOKEN \
  -X POST \
  -d '{"branch":"my-feature-branch","name":"my-feature"}' \
  -H 'Content-Type: application/json'

{
  "name": "my-feature",
  "keys_count": 8,
  "created_at": "2015-01-28T09:52:53Z",
  "updated_at": "2015-01-28T09:52:53Z",
  "statistics": [
    {
      "locale": {
        "id": "abcd1234cdef1234abcd1234cdef1234",
        "name": "de",
        "code": "de-DE"
      },
      "statistics": {
        "keys_total_count": 12,
        "translations_completed_count": 9,
        "translations_unverified_count": 11,
        "keys_untranslated_count": 3
      }
    }
  ]
}