There are 4 repositories under flask-mvc-structure topic.
Flask Simple Model-View-Controller(MVC)
This is an already built-in MVC structure for Flask application, you can add models views and controllers, you can also easily start working on the API with a structure already made
A mvc style boilerplate for Flask application
A 15-Factor enabled MVC Flask CRUD application integrating with Dash
A project management tool for a better project management