//settings.php (route file)
Route::prefix('otp')->group(function () {
        Route::post('/edit', [OtpController::class, 'edit'])->name('edit');
        Route::post('/update', [OtpController::class, 'update'])->name('update');
});

api.php route in route folder

Route::post('/send', [ApiOtpController::class, 'sendOtp'])->name('send');
Route::post('/verify', [ApiOtpController::class, 'verifyOtp'])->name('verify');