I love InertiaJS to the point where it's becoming a personality trait I tend to want to use it for everything, but adding Inertia to an existing Laravel API gets awkward fast. Same thing happens in the other direction: you start with a full Inertia frontend and then realize you want to expose some of that data as a public API too. The naive solutions are: Sprinkle if ($request->wantsJson()) into your controllers Maintain two separate routes that return the exact same data ...