Now a days I mostly always use either graphql/openapi depending on the history of the project and the preferences of the team. So there typically is a spec for

Now a days I mostly always use either graphql/openapi depending on the history of the project and the preferences of the team. So there typically is a spec for the API. I usually prefer a code-first approach and the open source tooling is able to extract the spec for me from annotations - which becomes a centralized location for exploration or generating clients.