I've used swagger quite a lot the last couple of years but I have a problem which I still haven't found an elegant solution for. How can I self host the API do

I've used swagger quite a lot the last couple of years but I have a problem which I still haven't found an elegant solution for. How can I self host the API documentation (as reference) without setting up the whole UI? Everything I've tried is "experimental", "not tested" and "almost working".