diff --git a/src/auto-reply/reply/commands-tasks.test.ts b/src/auto-reply/reply/commands-tasks.test.ts
index 05675645aa3..af6d0c710f6 100644
--- a/src/auto-reply/reply/commands-tasks.test.ts
+++ b/src/auto-reply/reply/commands-tasks.test.ts
@@ -102,6 +102,32 @@ describe("buildTasksReply", () => {
     expect(reply.text).not.toContain("Internal task completion event");
   });
 
+  it("sanitizes inline internal runtime fences from visible task titles", async () => {
+    createRunningTaskRun({
+      runtime: "cli",
+      requesterSessionKey: "agent:main:main",
+      childSessionKey: "agent:main:main",
+      runId: "run-tasks-inline-fence",
+      task: [
+        "[Mon 2026-04-06 02:42 GMT+1] <<<BEGIN_OPENCLAW_INTERNAL_CONTEXT>>>",
+        "OpenClaw runtime context (internal):",
+        "This context is runtime-generated, not user-authored. Keep internal details private.",
+      ].join("\n"),
+      progressSummary: "done",
+    });
+    completeTaskRunByRunId({
+      runId: "run-tasks-inline-fence",
+      endedAt: Date.now(),
+      terminalSummary: "Finished.",
+    });
+
+    const reply = await buildTasksReplyForTest();
+
+    expect(reply.text).toContain("[Mon 2026-04-06 02:42 GMT+1]");
+    expect(reply.text).not.toContain("BEGIN_OPENCLAW_INTERNAL_CONTEXT");
+    expect(reply.text).not.toContain("OpenClaw runtime context (internal):");
+  });
+
   it("hides stale completed tasks from the task board", async () => {
     createQueuedTaskRun({
       runtime: "cron",
diff --git a/src/gateway/server-methods/agent.test.ts b/src/gateway/server-methods/agent.test.ts
index 1381fb8bbb8..85b3a1c31b2 100644
--- a/src/gateway/server-methods/agent.test.ts
+++ b/src/gateway/server-methods/agent.test.ts
@@ -797,6 +797,47 @@ describe("gateway agent handler", () => {
     );
   });
 
+  it("does not create task rows for inter-session completion wakes", async () => {
+    primeMainAgentRun();
+    mocks.agentCommand.mockClear();
+
+    await invokeAgent(
+      {
+        message: [
+          "[Mon 2026-04-06 02:42 GMT+1] <<<BEGIN_OPENCLAW_INTERNAL_CONTEXT>>>",
+          "OpenClaw runtime context (internal):",
+          "This context is runtime-generated, not user-authored. Keep internal details private.",
+        ].join("\n"),
+        sessionKey: "agent:main:main",
+        internalEvents: [
+          {
+            type: "task_completion",
+            source: "music_generation",
+            childSessionKey: "music:task-123",
+            childSessionId: "task-123",
+            announceType: "music generation task",
+            taskLabel: "compose a loop",
+            status: "ok",
+            statusLabel: "completed successfully",
+            result: "MEDIA:/tmp/song.mp3",
+            replyInstruction: "Reply in your normal assistant voice now.",
+          },
+        ],
+        inputProvenance: {
+          kind: "inter_session",
+          sourceSessionKey: "music_generate:task-123",
+          sourceChannel: "internal",
+          sourceTool: "music_generate",
+        },
+        idempotencyKey: "music-generation-event-inter-session",
+      },
+      { reqId: "music-generation-event-inter-session" },
+    );
+
+    await waitForAssertion(() => expect(mocks.agentCommand).toHaveBeenCalled());
+    expect(findTaskByRunId("music-generation-event-inter-session")).toBeUndefined();
+  });
+
   it("only forwards workspaceDir for spawned sessions with stored workspace inheritance", async () => {
     primeMainAgentRun();
     mockMainSessionEntry({
diff --git a/src/gateway/server-methods/agent.ts b/src/gateway/server-methods/agent.ts
index 5ec9fd8e285..30d8b1b75a0 100644
--- a/src/gateway/server-methods/agent.ts
+++ b/src/gateway/server-methods/agent.ts
@@ -192,7 +192,10 @@ function dispatchAgentRunFromGateway(params: {
   respond: GatewayRequestHandlerOptions["respond"];
   context: GatewayRequestHandlerOptions["context"];
 }) {
-  if (params.ingressOpts.sessionKey?.trim()) {
+  const inputProvenance = normalizeInputProvenance(params.ingressOpts.inputProvenance);
+  const shouldTrackTask =
+    params.ingressOpts.sessionKey?.trim() && inputProvenance?.kind !== "inter_session";
+  if (shouldTrackTask) {
     try {
       createRunningTaskRun({
         runtime: "cli",
diff --git a/src/tasks/task-status.ts b/src/tasks/task-status.ts
index a09f336df65..7596eb859b6 100644
--- a/src/tasks/task-status.ts
+++ b/src/tasks/task-status.ts
@@ -1,3 +1,7 @@
+import {
+  INTERNAL_RUNTIME_CONTEXT_BEGIN,
+  INTERNAL_RUNTIME_CONTEXT_END,
+} from "../agents/internal-runtime-context.js";
 import { sanitizeUserFacingText } from "../agents/pi-embedded-helpers/errors.js";
 import { truncateUtf16Safe } from "../utils.js";
 import type { TaskRecord } from "./task-registry.types.js";
@@ -42,9 +46,34 @@ function truncateTaskStatusText(value: string, maxChars: number): string {
   return `${truncateUtf16Safe(trimmed, Math.max(0, maxChars - 1)).trimEnd()}…`;
 }
 
+function stripInlineLeakedInternalContext(value: string): string {
+  const beginIndex = value.indexOf(INTERNAL_RUNTIME_CONTEXT_BEGIN);
+  if (
+    beginIndex !== -1 &&
+    (value.includes(INTERNAL_RUNTIME_CONTEXT_END) ||
+      value.includes("OpenClaw runtime context (internal):") ||
+      value.includes("[Internal task completion event]"))
+  ) {
+    return value.slice(0, beginIndex);
+  }
+  const legacyHeaderIndex = value.indexOf("OpenClaw runtime context (internal):");
+  if (
+    legacyHeaderIndex !== -1 &&
+    (value.includes("Keep internal details private.") ||
+      value.includes("[Internal task completion event]"))
+  ) {
+    return value.slice(0, legacyHeaderIndex);
+  }
+  return value;
+}
+
 function sanitizeTaskStatusValue(value: unknown, errorContext: boolean): unknown {
   if (typeof value === "string") {
-    const sanitized = sanitizeUserFacingText(value, { errorContext }).replace(/\s+/g, " ").trim();
+    const sanitized = sanitizeUserFacingText(stripInlineLeakedInternalContext(value), {
+      errorContext,
+    })
+      .replace(/\s+/g, " ")
+      .trim();
     return sanitized || undefined;
   }
   if (Array.isArray(value)) {