diff --git a/TargetBridge-Receiver/TBReceiverC/src/main.c b/TargetBridge-Receiver/TBReceiverC/src/main.c
index f334413..4d23345 100644
--- a/TargetBridge-Receiver/TBReceiverC/src/main.c
+++ b/TargetBridge-Receiver/TBReceiverC/src/main.c
@@ -1855,6 +1855,14 @@ static void build_display_host(char *buf, size_t bufsz, const char *ip_fallback,
 int main(int argc, char **argv) {
     int fullscreen = 1;
     for (int i = 1; i < argc; i++) {
+        if (strcmp(argv[i], "--permission-status") == 0) {
+            printf(
+                "TB_PERMISSION_STATUS:screen_recording=0:accessibility=%d:input_monitoring=%d\n",
+                tb_receiver_accessibility_trusted(),
+                tb_receiver_input_monitoring_trusted()
+            );
+            return 0;
+        }
         if (strcmp(argv[i], "--windowed") == 0) fullscreen = 0;
     }
 
diff --git a/TargetBridge-Sender/TBDisplaySender/TBDisplaySenderApp.swift b/TargetBridge-Sender/TBDisplaySender/TBDisplaySenderApp.swift
index 5457c13..a96a66a 100644
--- a/TargetBridge-Sender/TBDisplaySender/TBDisplaySenderApp.swift
+++ b/TargetBridge-Sender/TBDisplaySender/TBDisplaySenderApp.swift
@@ -1,13 +1,31 @@
 import AppKit
+import ApplicationServices
+import Darwin
 import SwiftUI
 
 @main
 struct TBDisplaySenderApp: App {
-    @StateObject private var service = TBDisplaySenderService.shared
-    private let statusItemController = TBDisplaySenderStatusItemController(service: TBDisplaySenderService.shared)
+    @StateObject private var service: TBDisplaySenderService
+    private let statusItemController: TBDisplaySenderStatusItemController
 
     @MainActor
     init() {
+        // This probe is intentionally handled before constructing the shared
+        // service. The Setup Assistant can inspect the exact installed binary
+        // without opening a window, starting capture or attaching a display.
+        if CommandLine.arguments.contains("--permission-status") {
+            let screenRecording = CGPreflightScreenCaptureAccess() ? 1 : 0
+            let accessibility = AXIsProcessTrusted() ? 1 : 0
+            let inputMonitoring = CGPreflightListenEventAccess() ? 1 : 0
+            print("TB_PERMISSION_STATUS:screen_recording=\(screenRecording):accessibility=\(accessibility):input_monitoring=\(inputMonitoring)")
+            fflush(stdout)
+            Darwin.exit(EXIT_SUCCESS)
+        }
+
+        let sharedService = TBDisplaySenderService.shared
+        _service = StateObject(wrappedValue: sharedService)
+        statusItemController = TBDisplaySenderStatusItemController(service: sharedService)
+
         // LaunchAgent automation must not depend on SwiftUI restoring or showing
         // the main window on a headless Mac.
         TBSenderAutomation.handleLaunchArguments(CommandLine.arguments)