diff --git a/apps/android/app/src/test/java/ai/openclaw/android/gateway/GatewaySessionInvokeTest.kt b/apps/android/app/src/test/java/ai/openclaw/android/gateway/GatewaySessionInvokeTest.kt
index e0dded486d5..a04bcb1606f 100644
--- a/apps/android/app/src/test/java/ai/openclaw/android/gateway/GatewaySessionInvokeTest.kt
+++ b/apps/android/app/src/test/java/ai/openclaw/android/gateway/GatewaySessionInvokeTest.kt
@@ -158,6 +158,268 @@ class GatewaySessionInvokeTest {
     } finally {
       session.disconnect()
       sessionJob.cancelAndJoin()
+      server.shutdown()
+    }
+  }
+
+  @Test
+  fun nodeInvokeRequest_usesParamsJsonWhenProvided() = runBlocking {
+    val json = Json { ignoreUnknownKeys = true }
+    val connected = CompletableDeferred<Unit>()
+    val invokeRequest = CompletableDeferred<GatewaySession.InvokeRequest>()
+    val invokeResultParams = CompletableDeferred<String>()
+    val lastDisconnect = AtomicReference("")
+    val server =
+      MockWebServer().apply {
+        dispatcher =
+          object : Dispatcher() {
+            override fun dispatch(request: RecordedRequest): MockResponse {
+              return MockResponse().withWebSocketUpgrade(
+                object : WebSocketListener() {
+                  override fun onOpen(webSocket: WebSocket, response: Response) {
+                    webSocket.send(
+                      """{"type":"event","event":"connect.challenge","payload":{"nonce":"android-test-nonce"}}""",
+                    )
+                  }
+
+                  override fun onMessage(webSocket: WebSocket, text: String) {
+                    val frame = json.parseToJsonElement(text).jsonObject
+                    if (frame["type"]?.jsonPrimitive?.content != "req") return
+                    val id = frame["id"]?.jsonPrimitive?.content ?: return
+                    val method = frame["method"]?.jsonPrimitive?.content ?: return
+                    when (method) {
+                      "connect" -> {
+                        webSocket.send(
+                          """{"type":"res","id":"$id","ok":true,"payload":{"snapshot":{"sessionDefaults":{"mainSessionKey":"main"}}}}""",
+                        )
+                        webSocket.send(
+                          """{"type":"event","event":"node.invoke.request","payload":{"id":"invoke-2","nodeId":"node-2","command":"debug.raw","paramsJSON":"{\"raw\":true}","params":{"ignored":1},"timeoutMs":5000}}""",
+                        )
+                      }
+                      "node.invoke.result" -> {
+                        if (!invokeResultParams.isCompleted) {
+                          invokeResultParams.complete(frame["params"]?.toString().orEmpty())
+                        }
+                        webSocket.send("""{"type":"res","id":"$id","ok":true,"payload":{"ok":true}}""")
+                        webSocket.close(1000, "done")
+                      }
+                    }
+                  }
+                },
+              )
+            }
+          }
+        start()
+      }
+
+    val app = RuntimeEnvironment.getApplication()
+    val sessionJob = SupervisorJob()
+    val session =
+      GatewaySession(
+        scope = CoroutineScope(sessionJob + Dispatchers.Default),
+        identityStore = DeviceIdentityStore(app),
+        deviceAuthStore = null,
+        onConnected = { _, _, _ ->
+          if (!connected.isCompleted) connected.complete(Unit)
+        },
+        onDisconnected = { message ->
+          lastDisconnect.set(message)
+        },
+        onEvent = { _, _ -> },
+        onInvoke = { req ->
+          if (!invokeRequest.isCompleted) invokeRequest.complete(req)
+          GatewaySession.InvokeResult.ok("""{"handled":true}""")
+        },
+      )
+
+    try {
+      session.connect(
+        endpoint =
+          GatewayEndpoint(
+            stableId = "manual|127.0.0.1|${server.port}",
+            name = "test",
+            host = "127.0.0.1",
+            port = server.port,
+            tlsEnabled = false,
+          ),
+        token = "test-token",
+        password = null,
+        options =
+          GatewayConnectOptions(
+            role = "node",
+            scopes = listOf("node:invoke"),
+            caps = emptyList(),
+            commands = emptyList(),
+            permissions = emptyMap(),
+            client =
+              GatewayClientInfo(
+                id = "openclaw-android-test",
+                displayName = "Android Test",
+                version = "1.0.0-test",
+                platform = "android",
+                mode = "node",
+                instanceId = "android-test-instance",
+                deviceFamily = "android",
+                modelIdentifier = "test",
+              ),
+          ),
+        tls = null,
+      )
+
+      val connectedWithinTimeout = withTimeoutOrNull(8_000) {
+        connected.await()
+        true
+      } == true
+      if (!connectedWithinTimeout) {
+        throw AssertionError("never connected; lastDisconnect=${lastDisconnect.get()}; requests=${server.requestCount}")
+      }
+
+      val req = withTimeout(8_000) { invokeRequest.await() }
+      val resultParamsJson = withTimeout(8_000) { invokeResultParams.await() }
+      val resultParams = json.parseToJsonElement(resultParamsJson).jsonObject
+
+      assertEquals("invoke-2", req.id)
+      assertEquals("node-2", req.nodeId)
+      assertEquals("debug.raw", req.command)
+      assertEquals("""{"raw":true}""", req.paramsJson)
+      assertEquals("invoke-2", resultParams["id"]?.jsonPrimitive?.content)
+      assertEquals("node-2", resultParams["nodeId"]?.jsonPrimitive?.content)
+      assertEquals(true, resultParams["ok"]?.jsonPrimitive?.content?.toBooleanStrict())
+    } finally {
+      session.disconnect()
+      sessionJob.cancelAndJoin()
+      server.shutdown()
+    }
+  }
+
+  @Test
+  fun nodeInvokeRequest_mapsCodePrefixedErrorsIntoInvokeResult() = runBlocking {
+    val json = Json { ignoreUnknownKeys = true }
+    val connected = CompletableDeferred<Unit>()
+    val invokeResultParams = CompletableDeferred<String>()
+    val lastDisconnect = AtomicReference("")
+    val server =
+      MockWebServer().apply {
+        dispatcher =
+          object : Dispatcher() {
+            override fun dispatch(request: RecordedRequest): MockResponse {
+              return MockResponse().withWebSocketUpgrade(
+                object : WebSocketListener() {
+                  override fun onOpen(webSocket: WebSocket, response: Response) {
+                    webSocket.send(
+                      """{"type":"event","event":"connect.challenge","payload":{"nonce":"android-test-nonce"}}""",
+                    )
+                  }
+
+                  override fun onMessage(webSocket: WebSocket, text: String) {
+                    val frame = json.parseToJsonElement(text).jsonObject
+                    if (frame["type"]?.jsonPrimitive?.content != "req") return
+                    val id = frame["id"]?.jsonPrimitive?.content ?: return
+                    val method = frame["method"]?.jsonPrimitive?.content ?: return
+                    when (method) {
+                      "connect" -> {
+                        webSocket.send(
+                          """{"type":"res","id":"$id","ok":true,"payload":{"snapshot":{"sessionDefaults":{"mainSessionKey":"main"}}}}""",
+                        )
+                        webSocket.send(
+                          """{"type":"event","event":"node.invoke.request","payload":{"id":"invoke-3","nodeId":"node-3","command":"camera.snap","params":{"facing":"front"},"timeoutMs":5000}}""",
+                        )
+                      }
+                      "node.invoke.result" -> {
+                        if (!invokeResultParams.isCompleted) {
+                          invokeResultParams.complete(frame["params"]?.toString().orEmpty())
+                        }
+                        webSocket.send("""{"type":"res","id":"$id","ok":true,"payload":{"ok":true}}""")
+                        webSocket.close(1000, "done")
+                      }
+                    }
+                  }
+                },
+              )
+            }
+          }
+        start()
+      }
+
+    val app = RuntimeEnvironment.getApplication()
+    val sessionJob = SupervisorJob()
+    val session =
+      GatewaySession(
+        scope = CoroutineScope(sessionJob + Dispatchers.Default),
+        identityStore = DeviceIdentityStore(app),
+        deviceAuthStore = null,
+        onConnected = { _, _, _ ->
+          if (!connected.isCompleted) connected.complete(Unit)
+        },
+        onDisconnected = { message ->
+          lastDisconnect.set(message)
+        },
+        onEvent = { _, _ -> },
+        onInvoke = {
+          throw IllegalStateException("CAMERA_PERMISSION_REQUIRED: grant Camera permission")
+        },
+      )
+
+    try {
+      session.connect(
+        endpoint =
+          GatewayEndpoint(
+            stableId = "manual|127.0.0.1|${server.port}",
+            name = "test",
+            host = "127.0.0.1",
+            port = server.port,
+            tlsEnabled = false,
+          ),
+        token = "test-token",
+        password = null,
+        options =
+          GatewayConnectOptions(
+            role = "node",
+            scopes = listOf("node:invoke"),
+            caps = emptyList(),
+            commands = emptyList(),
+            permissions = emptyMap(),
+            client =
+              GatewayClientInfo(
+                id = "openclaw-android-test",
+                displayName = "Android Test",
+                version = "1.0.0-test",
+                platform = "android",
+                mode = "node",
+                instanceId = "android-test-instance",
+                deviceFamily = "android",
+                modelIdentifier = "test",
+              ),
+          ),
+        tls = null,
+      )
+
+      val connectedWithinTimeout = withTimeoutOrNull(8_000) {
+        connected.await()
+        true
+      } == true
+      if (!connectedWithinTimeout) {
+        throw AssertionError("never connected; lastDisconnect=${lastDisconnect.get()}; requests=${server.requestCount}")
+      }
+
+      val resultParamsJson = withTimeout(8_000) { invokeResultParams.await() }
+      val resultParams = json.parseToJsonElement(resultParamsJson).jsonObject
+
+      assertEquals("invoke-3", resultParams["id"]?.jsonPrimitive?.content)
+      assertEquals("node-3", resultParams["nodeId"]?.jsonPrimitive?.content)
+      assertEquals(false, resultParams["ok"]?.jsonPrimitive?.content?.toBooleanStrict())
+      assertEquals(
+        "CAMERA_PERMISSION_REQUIRED",
+        resultParams["error"]?.jsonObject?.get("code")?.jsonPrimitive?.content,
+      )
+      assertEquals(
+        "grant Camera permission",
+        resultParams["error"]?.jsonObject?.get("message")?.jsonPrimitive?.content,
+      )
+    } finally {
+      session.disconnect()
+      sessionJob.cancelAndJoin()
+      server.shutdown()
     }
   }
 }