Hey Romain, take a look on: https://download.eclipse.org/microprofile/microprofile-open-api-1.0/microprofile-openapi-spec.html#_content_format
It is clear for me there, that the default should be yaml. On Thu, Nov 29, 2018 at 2:58 PM Romain Manni-Bucau <rmannibu...@gmail.com> wrote: > Hello Ivan, > > this is actually not exactly the case, the impl is writer agnostic and > fully relies on JAXRS for that so if you have a body writer which matches > OpenAPI and returns yaml by default or > which prefer yaml over json then you will have the behavior you describe. > > To get yaml you can send the Accept header valued with yaml media type > like "text/yaml" for some implementations. > > Side note: the impl does not impose any body writer to be integrable in > any environment and does not enforce yaml as well cause it is not part of > the core of microprofile (and hopefully will never be) so no reason to > import a lib (which can be heavy and potentially with vulnerabilities + > work for the users to maintain it) for that. > > Romain Manni-Bucau > @rmannibucau <https://twitter.com/rmannibucau> | Blog > <https://rmannibucau.metawerx.net/> | Old Blog > <http://rmannibucau.wordpress.com> | Github > <https://github.com/rmannibucau> | LinkedIn > <https://www.linkedin.com/in/rmannibucau> | Book > <https://www.packtpub.com/application-development/java-ee-8-high-performance> > > > Le jeu. 29 nov. 2018 à 17:50, Ivan Junckes Filho <ivanjunc...@gmail.com> > a écrit : > >> Hey guys, I think I found a bug in OpenAPI implementation. >> >> The spec says: >> "The default format of the /openapi endpoint is YAML." >> >> But when I try to access /openapi it returns JSON by default. >> >> This is not correct. >> >> Also how can I access yaml if it is not default? >> >