curl --request GET \
  --url https://{cluster}.cognitedata.com/api/v1/projects/{project}/extractors/sources \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "externalId": "my.known.id",
      "name": "<string>",
      "description": "<string>",
      "type": "global",
      "documentation": "<string>",
      "imageUrl": "<string>",
      "tags": [
        "<string>"
      ]
    }
  ]
}