FaceMark is a powerful API for facial feature detection. It finds 68 points for a frontal face and 35 for a profile one. FaceMark detects landmarks for faces on the image specified by URL or uploaded as a file and produces JSON output containing a vector of facial landmarks and orientation for each face found.
Online demo is available at http://www.apicloud.me/apis/facemark/demo/
Feel free to test the API as much as you like!
The most recent and complete API documentation is always available at http://www.apicloud.me/apis/facemark/docs/