This library copies necessary code from ASP.NET Web API Source to make ApiControllerActionSelector flexible. Unfortunately current implementation does not provide any extension point.

This class (currently) exposes static property AmbiguousActionResolver. This property can be used in case of resolving an ambiguous case.

For example, in this case we pick the first action (just to illustrate):

ApiActionSelector.AmbiguousActionResolver = (context, actions) => actions.First();

If you cannot resolve, return null. This will result in the framework to throw the familiar ambiguous action exception.

####NOTE

I will be using this to resolve actions based on headers.