flavio is specialized on computing flavour observables given new physics contributions to the Wilson coefficients. In addition to model-independent analyses, this functionality can also be used for studying specific new physics models when interfaced with tools that compute these Wilson coefficients.
The universal interface to use codes that produce numerical values for the Wilson coefficients is the Wilson coefficient exchange format, which is supported by various public codes.
The easiest way to use WCxf together with flavio is to load a WCxf file into an instance of wilson.Wilson with the wilson package, as described in the discussion of new physics contributions. Assuming the WCxf file is named my_wc.json, all it takes is
flaviofrom wilson import Wilson
with open('my_wc.json', 'r') as f:
my_w = Wilson.load_wc(f)Now you can use this Wilson instance to compute anything you like, e.g.
flavio.np_prediction('BR(Bs->mumu)', my_w)This interface was removed in favour of WCxf in flavio v1.0 due to unsolved issues (see e.g. here).