diff --git a/apps/android/app/src/main/java/ai/openclaw/app/gateway/GatewayProtocol.kt b/apps/android/app/src/main/java/ai/openclaw/app/gateway/GatewayProtocol.kt
index 83f591a87a07..3c65a5747683 100644
--- a/apps/android/app/src/main/java/ai/openclaw/app/gateway/GatewayProtocol.kt
+++ b/apps/android/app/src/main/java/ai/openclaw/app/gateway/GatewayProtocol.kt
@@ -325,6 +325,13 @@ data class SessionGitHubPublicationFailed(
 @JsonClassDiscriminator("status")
 sealed interface SessionGitHubPublicationResult
 
+@Serializable
+data class TalkSessionCancelOutputResult(
+  val ok: Boolean,
+  val status: String? = null,
+  val turnId: String? = null,
+)
+
 @Serializable
 data class GatewayEventFrameStateVersion(
   val presence: Long,
diff --git a/apps/android/app/src/main/java/ai/openclaw/app/voice/TalkModeManager.kt b/apps/android/app/src/main/java/ai/openclaw/app/voice/TalkModeManager.kt
index a099c4252376..0aec10dbafaa 100644
--- a/apps/android/app/src/main/java/ai/openclaw/app/voice/TalkModeManager.kt
+++ b/apps/android/app/src/main/java/ai/openclaw/app/voice/TalkModeManager.kt
@@ -3,6 +3,7 @@ package ai.openclaw.app.voice
 import ai.openclaw.app.gateway.ChatSendAck
 import ai.openclaw.app.gateway.GatewayRequestRejected
 import ai.openclaw.app.gateway.GatewaySession
+import ai.openclaw.app.gateway.TalkSessionCancelOutputResult
 import ai.openclaw.app.gateway.chatSendAckHistorySinceSeconds
 import ai.openclaw.app.gateway.parseChatSendAck
 import ai.openclaw.app.i18n.NativeText
@@ -60,6 +61,7 @@ import kotlinx.coroutines.withContext
 import kotlinx.coroutines.withTimeout
 import kotlinx.coroutines.withTimeoutOrNull
 import kotlinx.coroutines.yield
+import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonArray
 import kotlinx.serialization.json.JsonElement
@@ -2934,9 +2936,8 @@ class TalkModeManager internal constructor(
             put("reason", JsonPrimitive(reason))
             if (turnId != null) put("turnId", JsonPrimitive(turnId))
           }
-        val result =
-          json.parseToJsonElement(requestGateway("talk.session.cancelOutput", params.toString(), timeoutMs = 5_000)).asObjectOrNull()
-        if (result?.get("status").asStringOrNull() != "applied") clear.complete(Unit)
+        val response = requestGateway("talk.session.cancelOutput", params.toString(), timeoutMs = 5_000)
+        if (shouldRetireRealtimeOutputCancellation(response)) clear.complete(Unit)
         // The response confirms provider cancellation; clear confirms that the
         // old playback boundary reached Android before capture can resume.
         withTimeout(2_000) { clear.await() }
@@ -3335,6 +3336,16 @@ class TalkModeManager internal constructor(
 
 private fun JsonElement?.asObjectOrNull(): JsonObject? = this as? JsonObject
 
+internal fun shouldRetireRealtimeOutputCancellation(response: String): Boolean {
+  val result = Json.decodeFromString<TalkSessionCancelOutputResult>(response)
+  check(result.ok) { "talk.session.cancelOutput was not accepted" }
+  return when (result.status) {
+    null, "applied" -> false
+    "stale", "idle" -> true
+    else -> error("unknown talk.session.cancelOutput status")
+  }
+}
+
 private fun JsonElement?.asStringOrNull(): String? = (this as? JsonPrimitive)?.takeIf { it.isString }?.content
 
 private fun JsonElement?.asDoubleOrNull(): Double? {
diff --git a/apps/android/app/src/test/java/ai/openclaw/app/voice/TalkModeManagerTest.kt b/apps/android/app/src/test/java/ai/openclaw/app/voice/TalkModeManagerTest.kt
index 5ce7d595136a..3cf1e1ad32b5 100644
--- a/apps/android/app/src/test/java/ai/openclaw/app/voice/TalkModeManagerTest.kt
+++ b/apps/android/app/src/test/java/ai/openclaw/app/voice/TalkModeManagerTest.kt
@@ -850,6 +850,21 @@ class TalkModeManagerTest {
       assertFalse(stoppedByRelay)
     }
 
+  @Test
+  fun outputCancellationResultRetainsOnlyAcceptedClearFences() {
+    assertFalse(shouldRetireRealtimeOutputCancellation("""{"ok":true}"""))
+    assertFalse(shouldRetireRealtimeOutputCancellation("""{"ok":true,"status":"applied"}"""))
+    assertTrue(shouldRetireRealtimeOutputCancellation("""{"ok":true,"status":"stale"}"""))
+    assertTrue(shouldRetireRealtimeOutputCancellation("""{"ok":true,"status":"idle"}"""))
+  }
+
+  @Test
+  fun malformedOutputCancellationResultFailsClosed() {
+    for (response in listOf("""{"status":"stale"}""", """{"ok":true,"status":"unknown"}""", """{"ok":true,"extra":1}""")) {
+      assertTrue(runCatching { shouldRetireRealtimeOutputCancellation(response) }.isFailure)
+    }
+  }
+
   @Test
   fun stalePushToTalkCompletionCannotResumeNewerPause() =
     runTest {
diff --git a/apps/shared/OpenClawKit/Sources/OpenClawKit/RealtimeTalkRelaySession.swift b/apps/shared/OpenClawKit/Sources/OpenClawKit/RealtimeTalkRelaySession.swift
index 15e04a8b24a4..6545b29fca7e 100644
--- a/apps/shared/OpenClawKit/Sources/OpenClawKit/RealtimeTalkRelaySession.swift
+++ b/apps/shared/OpenClawKit/Sources/OpenClawKit/RealtimeTalkRelaySession.swift
@@ -1195,12 +1195,20 @@ extension RealtimeTalkRelaySession {
             ]
             do {
                 let response = try await transport.request("talk.session.cancelOutput", payload, 8000)
-                let status = try? JSONDecoder().decode([String: String].self, from: response)["status"]
+                let result = try JSONDecoder().decode(TalkSessionCancelOutputResult.self, from: response)
+                guard result.ok else { throw URLError(.badServerResponse) }
                 guard let self, self.isCurrentOutputCancellation(cancellationGeneration) else { return }
-                if status == "stale" || status == "idle" || !self.awaitingOutputClear {
+                switch result.status?.stringValue {
+                case "stale", "idle":
                     self.retireOutputCancellation()
-                } else {
-                    self.outputCancellationTask = nil
+                case nil, "applied":
+                    if self.awaitingOutputClear {
+                        self.outputCancellationTask = nil
+                    } else {
+                        self.retireOutputCancellation()
+                    }
+                default:
+                    throw URLError(.badServerResponse)
                 }
             } catch {
                 guard let self, self.isCurrentOutputCancellation(cancellationGeneration) else { return }
diff --git a/apps/shared/OpenClawKit/Sources/OpenClawProtocol/GatewayModels.swift b/apps/shared/OpenClawKit/Sources/OpenClawProtocol/GatewayModels.swift
index 640f50c7fb86..d8ec69691eb1 100644
--- a/apps/shared/OpenClawKit/Sources/OpenClawProtocol/GatewayModels.swift
+++ b/apps/shared/OpenClawKit/Sources/OpenClawProtocol/GatewayModels.swift
@@ -13111,6 +13111,28 @@ public struct TalkSessionCancelOutputParams: Codable, Sendable {
     }
 }
 
+public struct TalkSessionCancelOutputResult: Codable, Sendable {
+    public let ok: Bool
+    public let status: AnyCodable?
+    public let turnid: String?
+
+    public init(
+        ok: Bool,
+        status: AnyCodable? = nil,
+        turnid: String? = nil)
+    {
+        self.ok = ok
+        self.status = status
+        self.turnid = turnid
+    }
+
+    private enum CodingKeys: String, CodingKey {
+        case ok
+        case status
+        case turnid = "turnId"
+    }
+}
+
 public struct TalkSessionCreateParams: Codable, Sendable {
     public let sessionkey: String?
     public let spawnedby: String?
diff --git a/apps/shared/OpenClawKit/Tests/OpenClawKitTests/RealtimeTalkRelaySessionTests.swift b/apps/shared/OpenClawKit/Tests/OpenClawKitTests/RealtimeTalkRelaySessionTests.swift
index da6ab711f49f..b43a8ff72431 100644
--- a/apps/shared/OpenClawKit/Tests/OpenClawKitTests/RealtimeTalkRelaySessionTests.swift
+++ b/apps/shared/OpenClawKit/Tests/OpenClawKitTests/RealtimeTalkRelaySessionTests.swift
@@ -982,7 +982,7 @@ extension RealtimeTalkRelaySessionTests {
                 request: { method, params, _ in
                     await requests.record(method: method, params: params)
                     await barrier.suspend()
-                    return Data("{\"status\":\"\(status)\"}".utf8)
+                    return Data("{\"ok\":true,\"status\":\"\(status)\"}".utf8)
                 }),
             options: .init(sessionKey: "main", provider: "openai", model: nil, voice: nil),
             audioCapture: TestRealtimeTalkAudioCapture(),
@@ -1288,7 +1288,7 @@ extension RealtimeTalkRelaySessionTests {
                     await requests.record(method: method, params: params)
                     if method == "talk.session.cancelOutput" {
                         await barrier.suspend()
-                        return Data("{\"status\":\"applied\",\"turnId\":\"turn-1\"}".utf8)
+                        return Data("{\"ok\":true,\"status\":\"applied\",\"turnId\":\"turn-1\"}".utf8)
                     }
                     return Data("{\"ok\":true}".utf8)
                 }),
diff --git a/packages/gateway-protocol/src/channels.schema.test.ts b/packages/gateway-protocol/src/channels.schema.test.ts
index 4c1b4e0a5356..67aae8e1f758 100644
--- a/packages/gateway-protocol/src/channels.schema.test.ts
+++ b/packages/gateway-protocol/src/channels.schema.test.ts
@@ -1,7 +1,11 @@
 // Gateway Protocol tests cover channels.schema behavior.
 import { Compile } from "typebox/compile";
 import { describe, expect, it } from "vitest";
-import { ChannelsStatusResultSchema, WebLoginWaitParamsSchema } from "./schema/channels.js";
+import {
+  ChannelsStatusResultSchema,
+  TalkSessionCancelOutputResultSchema,
+  WebLoginWaitParamsSchema,
+} from "./schema/channels.js";
 
 /**
  * Channel schema regressions for browser login and status diagnostics.
@@ -33,6 +37,30 @@ describe("WebLoginWaitParamsSchema", () => {
   });
 });
 
+describe("TalkSessionCancelOutputResultSchema", () => {
+  const validate = Compile(TalkSessionCancelOutputResultSchema);
+
+  it("accepts only closed cancellation outcomes with an explicit ok field", () => {
+    for (const value of [
+      { ok: true },
+      { ok: true, status: "applied", turnId: "turn-7" },
+      { ok: true, status: "stale" },
+      { ok: true, status: "idle" },
+    ]) {
+      expect(validate.Check(value)).toBe(true);
+    }
+    for (const value of [
+      {},
+      { status: "applied" },
+      { ok: true, status: "unknown" },
+      { ok: true, turnId: "" },
+      { ok: true, extra: true },
+    ]) {
+      expect(validate.Check(value)).toBe(false);
+    }
+  });
+});
+
 describe("ChannelsStatusResultSchema", () => {
   /** Compiled status validator for channel docking diagnostics. */
   const validate = Compile(ChannelsStatusResultSchema);
diff --git a/packages/gateway-protocol/src/public-schema.ts b/packages/gateway-protocol/src/public-schema.ts
index f4c2f8f1f487..3511f233c98b 100644
--- a/packages/gateway-protocol/src/public-schema.ts
+++ b/packages/gateway-protocol/src/public-schema.ts
@@ -413,6 +413,7 @@ export {
   TalkSessionAppendAudioParamsSchema,
   TalkSessionAcknowledgeMarkParamsSchema,
   TalkSessionCancelOutputParamsSchema,
+  TalkSessionCancelOutputResultSchema,
   TalkSessionCreateParamsSchema,
   TalkSessionCreateResultSchema,
   TalkSessionSteerParamsSchema,
diff --git a/packages/gateway-protocol/src/schema/channels.ts b/packages/gateway-protocol/src/schema/channels.ts
index c313c1594d61..a2dfd607c709 100644
--- a/packages/gateway-protocol/src/schema/channels.ts
+++ b/packages/gateway-protocol/src/schema/channels.ts
@@ -317,6 +317,15 @@ export const TalkSessionCancelOutputParamsSchema = closedObject({
   reason: Type.Optional(Type.String()),
 });
 
+/** Reports whether a Talk output cancellation applied to the requested turn. */
+export const TalkSessionCancelOutputResultSchema = closedObject({
+  ok: Type.Boolean(),
+  status: Type.Optional(
+    Type.Union([Type.Literal("applied"), Type.Literal("stale"), Type.Literal("idle")]),
+  ),
+  turnId: Type.Optional(NonEmptyString),
+});
+
 /** Submits a tool result back to a Talk provider session. */
 export const TalkSessionSubmitToolResultParamsSchema = closedObject({
   sessionId: NonEmptyString,
@@ -741,6 +750,7 @@ export type TalkSessionCreateParams = Static<typeof TalkSessionCreateParamsSchem
 export type TalkSessionCreateResult = Static<typeof TalkSessionCreateResultSchema>;
 export type TalkSessionAppendAudioParams = Static<typeof TalkSessionAppendAudioParamsSchema>;
 export type TalkSessionCancelOutputParams = Static<typeof TalkSessionCancelOutputParamsSchema>;
+export type TalkSessionCancelOutputResult = Static<typeof TalkSessionCancelOutputResultSchema>;
 export type TalkSessionSteerParams = Static<typeof TalkSessionSteerParamsSchema>;
 export type TalkSessionSubmitToolResultParams = Static<
   typeof TalkSessionSubmitToolResultParamsSchema
diff --git a/packages/gateway-protocol/src/schema/protocol-schema-fragment-channels.ts b/packages/gateway-protocol/src/schema/protocol-schema-fragment-channels.ts
index 1a698c298656..0864577582da 100644
--- a/packages/gateway-protocol/src/schema/protocol-schema-fragment-channels.ts
+++ b/packages/gateway-protocol/src/schema/protocol-schema-fragment-channels.ts
@@ -21,6 +21,7 @@ export const ChannelProtocolSchemas = {
   TalkSessionAppendAudioParams: channels.TalkSessionAppendAudioParamsSchema,
   TalkSessionAcknowledgeMarkParams: talkMarks.TalkSessionAcknowledgeMarkParamsSchema,
   TalkSessionCancelOutputParams: channels.TalkSessionCancelOutputParamsSchema,
+  TalkSessionCancelOutputResult: channels.TalkSessionCancelOutputResultSchema,
   TalkSessionCreateParams: channels.TalkSessionCreateParamsSchema,
   TalkSessionCreateResult: channels.TalkSessionCreateResultSchema,
   TalkSessionSteerParams: channels.TalkSessionSteerParamsSchema,
diff --git a/packages/gateway-protocol/src/validator-registry.ts b/packages/gateway-protocol/src/validator-registry.ts
index 9e2dd3531fc8..db35ec32e32a 100644
--- a/packages/gateway-protocol/src/validator-registry.ts
+++ b/packages/gateway-protocol/src/validator-registry.ts
@@ -330,6 +330,7 @@ export const validateTalkSessionAcknowledgeMarkParams = compile(
   S.TalkSessionAcknowledgeMarkParamsSchema,
 );
 export const validateTalkSessionCancelOutputParams = compile(S.TalkSessionCancelOutputParamsSchema);
+export const validateTalkSessionCancelOutputResult = compile(S.TalkSessionCancelOutputResultSchema);
 export const validateTalkSessionSteerParams = compile(S.TalkSessionSteerParamsSchema);
 export const validateTalkSessionSubmitToolResultParams = compile(
   S.TalkSessionSubmitToolResultParamsSchema,
diff --git a/scripts/protocol-gen-kotlin.ts b/scripts/protocol-gen-kotlin.ts
index 53eca8ca1252..6e3e6dfc3799 100644
--- a/scripts/protocol-gen-kotlin.ts
+++ b/scripts/protocol-gen-kotlin.ts
@@ -87,6 +87,7 @@ const schemaNames = new Map<string, string>([
   ["SessionGitHubPublicationPublished", "SessionGitHubPublicationPublished"],
   ["SessionGitHubPublicationFailed", "SessionGitHubPublicationFailed"],
   ["SessionGitHubPublicationResult", "SessionGitHubPublicationResult"],
+  ["TalkSessionCancelOutputResult", "TalkSessionCancelOutputResult"],
 ]);
 
 const androidEnums: EnumSpec[] = [
diff --git a/src/gateway/server-methods/talk-session.ts b/src/gateway/server-methods/talk-session.ts
index 59a76f44fc60..b679c46f262a 100644
--- a/src/gateway/server-methods/talk-session.ts
+++ b/src/gateway/server-methods/talk-session.ts
@@ -432,7 +432,7 @@ export const talkSessionHandlers: GatewayRequestHandlers = {
         reason: normalizeOptionalString(params.reason) ?? "output-cancelled",
         turnId: normalizeOptionalString(params.turnId),
       });
-      respondOk(respond, result);
+      respondOk(respond, { ok: true, ...result });
     } catch (err) {
       respondUnavailable(respond, err);
     }
diff --git a/src/gateway/server-methods/talk.test.ts b/src/gateway/server-methods/talk.test.ts
index be4cf5659a8e..e91d26445e24 100644
--- a/src/gateway/server-methods/talk.test.ts
+++ b/src/gateway/server-methods/talk.test.ts
@@ -1748,7 +1748,7 @@ describe("talk.session unified handlers", () => {
       reason: "barge-in",
       turnId: "turn-7",
     });
-    expectRespondOk(cancelRespond, { status: "applied", turnId: "turn-7" });
+    expectRespondOk(cancelRespond, { ok: true, status: "applied", turnId: "turn-7" });
     for (const status of ["stale", "idle"] as const) {
       const nonAppliedRespond = vi.fn();
       mocks.cancelTalkRealtimeRelayTurn.mockResolvedValueOnce({ status });
@@ -1758,7 +1758,7 @@ describe("talk.session unified handlers", () => {
         respond: nonAppliedRespond,
         context: {},
       });
-      expectRespondOk(nonAppliedRespond, { status });
+      expectRespondOk(nonAppliedRespond, { ok: true, status });
     }
     expect(mocks.cancelTalkRealtimeRelayTurn).toHaveBeenLastCalledWith({
       relaySessionId: "relay-unified-1",