For Web APIs OpenAPI Specification has been a great resource for internal and external projects. With viewers like https://github.com/Rebilly/ReDoc/ https://gi

For Web APIs OpenAPI Specification has been a great resource for internal and external projects. With viewers like https://github.com/Rebilly/ReDoc/ https://github.com/Rebilly/ReDoc/ it gets pretty easy to take the spec and generate something pleasing for a consuming developer. Unless you are talking about native code APIs ...