This article focuses on the switched coupled fractional differential system with \(\psi \) -Hilfer fractional derivative and multipoint integral boundary conditions. The investigation is carried out in a special working space, given that the system relies on lower-order fractional derivatives of unknown functions. By employing the Banach contraction principle and the Leray-Schauder non-linear alternative, a qualitative analysis of the solution is performed. Finally, an illustration is given, and the results are represented graphically.