diff --git a/CHANGELOG.md b/CHANGELOG.md
index b60fc383104..d910007b667 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -58,6 +58,7 @@ Docs: https://docs.openclaw.ai
 
 - Telegram/streaming: sanitize tool-progress draft preview backticks before shared compaction, so long backtick-heavy progress text still renders inside the safe code-formatted preview instead of collapsing to an ellipsis.
 - Agents/Pi: suppress persistence for synthetic mid-turn overflow continuation prompts, so transcript-retry recovery does not write the "continue from transcript" prompt as a new user turn. Thanks @vincentkoc.
+- Agents/tools: strip reasoning text from visible rich presentation titles, blocks, buttons, and select labels before message-tool sends, so structured channel payloads cannot leak hidden planning. Thanks @vincentkoc.
 - Telegram: keep reply-dispatch lazy provider runtime chunks behind stable dist names and delete `/reasoning stream` previews after final delivery so package updates and live reasoning drafts do not leave Telegram turns broken or noisy. Thanks @BunsDev.
 - Exec approvals: detect `env -S` split-string command-carrier risks when `-S`/`-s` is combined with other env short options, so approval explanations do not miss split payloads hidden behind `env -iS...`. Thanks @vincentkoc.
 - Google Meet: log the concrete agent-mode TTS provider, model, voice, output format, and sample rate after speech synthesis, so Meet logs show which voice backend spoke each reply.
diff --git a/src/agents/tools/message-tool.test.ts b/src/agents/tools/message-tool.test.ts
index 9c541a769a3..c8945029367 100644
--- a/src/agents/tools/message-tool.test.ts
+++ b/src/agents/tools/message-tool.test.ts
@@ -1135,6 +1135,57 @@ describe("message tool reasoning tag sanitization", () => {
       expect(call?.params?.[field]).toBe(expected);
     },
   );
+
+  it("sanitizes visible presentation text before sending", async () => {
+    mockSendResult({ channel: "slack", to: "slack:C123" });
+
+    const call = await executeSend({
+      action: {
+        target: "slack:C123",
+        presentation: {
+          title: "<think>internal title</think>Deploy ready",
+          blocks: [
+            { type: "text", text: "<think>internal note</think>Ship it" },
+            {
+              type: "buttons",
+              buttons: [
+                {
+                  label: "<think>button rationale</think>Approve",
+                  value: "approve",
+                },
+              ],
+            },
+            {
+              type: "select",
+              placeholder: "<think>selection rationale</think>Pick a lane",
+              options: [
+                {
+                  label: "<think>option rationale</think>Main",
+                  value: "main",
+                },
+              ],
+            },
+          ],
+        },
+      },
+    });
+
+    expect(call?.params?.presentation).toEqual({
+      title: "Deploy ready",
+      blocks: [
+        { type: "text", text: "Ship it" },
+        {
+          type: "buttons",
+          buttons: [{ label: "Approve", value: "approve" }],
+        },
+        {
+          type: "select",
+          placeholder: "Pick a lane",
+          options: [{ label: "Main", value: "main" }],
+        },
+      ],
+    });
+  });
 });
 
 describe("message tool sandbox passthrough", () => {
diff --git a/src/agents/tools/message-tool.ts b/src/agents/tools/message-tool.ts
index c74e6480c98..5d8e72a8671 100644
--- a/src/agents/tools/message-tool.ts
+++ b/src/agents/tools/message-tool.ts
@@ -65,6 +65,55 @@ function stripFormattedReasoningMessage(text: string): string {
   return lines.slice(index).join("\n").trim();
 }
 
+function sanitizePresentationTextFields(value: unknown): unknown {
+  if (!value || typeof value !== "object" || Array.isArray(value)) {
+    return value;
+  }
+  const presentation = { ...(value as Record<string, unknown>) };
+  if (typeof presentation.title === "string") {
+    presentation.title = stripFormattedReasoningMessage(presentation.title);
+  }
+  if (Array.isArray(presentation.blocks)) {
+    presentation.blocks = presentation.blocks.map((block) => {
+      if (!block || typeof block !== "object" || Array.isArray(block)) {
+        return block;
+      }
+      const sanitizedBlock = { ...(block as Record<string, unknown>) };
+      for (const field of ["text", "placeholder"]) {
+        if (typeof sanitizedBlock[field] === "string") {
+          sanitizedBlock[field] = stripFormattedReasoningMessage(sanitizedBlock[field]);
+        }
+      }
+      if (Array.isArray(sanitizedBlock.buttons)) {
+        sanitizedBlock.buttons = sanitizedBlock.buttons.map((button) => {
+          if (!button || typeof button !== "object" || Array.isArray(button)) {
+            return button;
+          }
+          const sanitizedButton = { ...(button as Record<string, unknown>) };
+          if (typeof sanitizedButton.label === "string") {
+            sanitizedButton.label = stripFormattedReasoningMessage(sanitizedButton.label);
+          }
+          return sanitizedButton;
+        });
+      }
+      if (Array.isArray(sanitizedBlock.options)) {
+        sanitizedBlock.options = sanitizedBlock.options.map((option) => {
+          if (!option || typeof option !== "object" || Array.isArray(option)) {
+            return option;
+          }
+          const sanitizedOption = { ...(option as Record<string, unknown>) };
+          if (typeof sanitizedOption.label === "string") {
+            sanitizedOption.label = stripFormattedReasoningMessage(sanitizedOption.label);
+          }
+          return sanitizedOption;
+        });
+      }
+      return sanitizedBlock;
+    });
+  }
+  return presentation;
+}
+
 function buildRoutingSchema() {
   return {
     channel: Type.Optional(Type.String()),
@@ -715,6 +764,7 @@ export function createMessageTool(options?: MessageToolOptions): AnyAgentTool {
           params[field] = stripFormattedReasoningMessage(params[field]);
         }
       }
+      params.presentation = sanitizePresentationTextFields(params.presentation);
 
       const action = readStringParam(params, "action", {
         required: true,