diff --git a/extensions/telegram/src/action-runtime.test.ts b/extensions/telegram/src/action-runtime.test.ts
index 943c79c9298..c4e91216f0c 100644
--- a/extensions/telegram/src/action-runtime.test.ts
+++ b/extensions/telegram/src/action-runtime.test.ts
@@ -407,6 +407,24 @@ describe("handleTelegramAction", () => {
     expect(reactMessageTelegram).not.toHaveBeenCalled();
   });
 
+  it("soft-fails fractional reaction message ids", async () => {
+    const result = await handleTelegramAction(
+      {
+        action: "react",
+        chatId: "123",
+        messageId: 456.5,
+        emoji: "✅",
+      },
+      reactionConfig("minimal"),
+    );
+
+    expect(resultDetails(result)).toMatchObject({
+      ok: false,
+      reason: "missing_message_id",
+    });
+    expect(reactMessageTelegram).not.toHaveBeenCalled();
+  });
+
   it("removes reactions on empty emoji", async () => {
     await handleTelegramAction(
       {
@@ -482,6 +500,52 @@ describe("handleTelegramAction", () => {
     expect(options.messageThreadId).toBe(11);
   });
 
+  it("treats null primary id aliases as absent", async () => {
+    await handleTelegramAction(
+      {
+        action: "sendSticker",
+        to: "123",
+        fileId: "sticker",
+        replyToMessageId: null,
+        replyTo: 9,
+        messageThreadId: null,
+        threadId: 11,
+      },
+      telegramConfig({ actions: { sticker: true } }),
+    );
+    const call = mockCall(sendStickerTelegram, 0, "sticker null aliases");
+    const options = requireRecord(call[2], "sticker null alias options");
+    expect(options.replyToMessageId).toBe(9);
+    expect(options.messageThreadId).toBe(11);
+  });
+
+  it("rejects fractional Telegram thread and reply ids before sending", async () => {
+    await expect(
+      handleTelegramAction(
+        {
+          action: "sendMessage",
+          to: "123",
+          content: "hello",
+          replyToMessageId: 9.5,
+        },
+        telegramConfig(),
+      ),
+    ).rejects.toThrow("replyToMessageId must be a positive integer.");
+    await expect(
+      handleTelegramAction(
+        {
+          action: "sendSticker",
+          to: "123",
+          fileId: "sticker",
+          threadId: 11.5,
+        },
+        telegramConfig({ actions: { sticker: true } }),
+      ),
+    ).rejects.toThrow("threadId must be a positive integer.");
+    expect(sendDurableMessageBatch).not.toHaveBeenCalled();
+    expect(sendStickerTelegram).not.toHaveBeenCalled();
+  });
+
   it("removes reactions when remove flag set", async () => {
     const cfg = reactionConfig("extensive");
     await handleTelegramAction(
@@ -991,6 +1055,22 @@ describe("handleTelegramAction", () => {
     expect(details.pollId).toBe("poll-1");
   });
 
+  it("rejects fractional poll durations before sending", async () => {
+    await expect(
+      handleTelegramAction(
+        {
+          action: "poll",
+          to: "@testchannel",
+          question: "Ready?",
+          answers: ["Yes", "No"],
+          durationSeconds: 60.5,
+        },
+        telegramConfig(),
+      ),
+    ).rejects.toThrow("durationSeconds must be a positive integer.");
+    expect(sendPollTelegram).not.toHaveBeenCalled();
+  });
+
   it("accepts shared poll action aliases", async () => {
     await handleTelegramAction(
       {
@@ -1467,6 +1547,36 @@ describe("handleTelegramAction", () => {
     expect(requireRecord(call[2], "delete message options").token).toBe("tok");
   });
 
+  it("rejects fractional message ids before mutating messages", async () => {
+    const cfg = {
+      channels: { telegram: { botToken: "tok" } },
+    } as OpenClawConfig;
+
+    await expect(
+      handleTelegramAction(
+        {
+          action: "deleteMessage",
+          chatId: "123",
+          messageId: 456.5,
+        },
+        cfg,
+      ),
+    ).rejects.toThrow("messageId must be a positive integer.");
+    await expect(
+      handleTelegramAction(
+        {
+          action: "editMessage",
+          chatId: "123",
+          messageId: 456.5,
+          content: "updated",
+        },
+        cfg,
+      ),
+    ).rejects.toThrow("messageId must be a positive integer.");
+    expect(deleteMessageTelegram).not.toHaveBeenCalled();
+    expect(editMessageTelegram).not.toHaveBeenCalled();
+  });
+
   it("surfaces non-fatal delete warnings", async () => {
     deleteMessageTelegram.mockResolvedValueOnce({
       ok: false,
diff --git a/extensions/telegram/src/action-runtime.ts b/extensions/telegram/src/action-runtime.ts
index 0f2d821bff3..42345e00b76 100644
--- a/extensions/telegram/src/action-runtime.ts
+++ b/extensions/telegram/src/action-runtime.ts
@@ -2,7 +2,7 @@ import type { AgentToolResult } from "openclaw/plugin-sdk/agent-core";
 import { readBooleanParam } from "openclaw/plugin-sdk/boolean-param";
 import {
   jsonResult,
-  readNumberParam,
+  readPositiveIntegerParam,
   readReactionParams,
   readStringArrayParam,
   readStringOrNumberParam,
@@ -97,7 +97,9 @@ type TelegramForumTopicIconColor = (typeof TELEGRAM_FORUM_TOPIC_ICON_COLORS)[num
 function readTelegramForumTopicIconColor(
   params: Record<string, unknown>,
 ): TelegramForumTopicIconColor | undefined {
-  const iconColor = readNumberParam(params, "iconColor", { integer: true });
+  const iconColor = readPositiveIntegerParam(params, "iconColor", {
+    message: "iconColor must be one of Telegram's supported forum topic colors.",
+  });
   if (iconColor == null) {
     return undefined;
   }
@@ -124,8 +126,12 @@ function readTelegramChatId(params: Record<string, unknown>) {
 
 function readTelegramThreadId(params: Record<string, unknown>) {
   return (
-    readNumberParam(params, "messageThreadId", { integer: true }) ??
-    readNumberParam(params, "threadId", { integer: true })
+    readPositiveIntegerParam(params, "messageThreadId", {
+      message: "messageThreadId must be a positive integer.",
+    }) ??
+    readPositiveIntegerParam(params, "threadId", {
+      message: "threadId must be a positive integer.",
+    })
   );
 }
 
@@ -147,8 +153,12 @@ function formatTelegramDeliveryTarget(to: string, messageThreadId?: number | nul
 
 function readTelegramReplyToMessageId(params: Record<string, unknown>) {
   return (
-    readNumberParam(params, "replyToMessageId", { integer: true }) ??
-    readNumberParam(params, "replyTo", { integer: true })
+    readPositiveIntegerParam(params, "replyToMessageId", {
+      message: "replyToMessageId must be a positive integer.",
+    }) ??
+    readPositiveIntegerParam(params, "replyTo", {
+      message: "replyTo must be a positive integer.",
+    })
   );
 }
 
@@ -353,9 +363,19 @@ export async function handleTelegramAction(
       });
     }
     const chatId = readTelegramChatId(params);
-    const messageId =
-      readNumberParam(params, "messageId", { integer: true }) ??
-      resolveReactionMessageId({ args: params });
+    let explicitMessageId: number | undefined;
+    try {
+      explicitMessageId = readPositiveIntegerParam(params, "messageId", {
+        message: "messageId must be a positive integer.",
+      });
+    } catch {
+      return jsonResult({
+        ok: false,
+        reason: "missing_message_id",
+        hint: "Telegram reaction requires a valid messageId (or inbound context fallback). Do not retry.",
+      });
+    }
+    const messageId = explicitMessageId ?? resolveReactionMessageId({ args: params });
     if (typeof messageId !== "number" || !Number.isFinite(messageId) || messageId <= 0) {
       return jsonResult({
         ok: false,
@@ -547,16 +567,18 @@ export async function handleTelegramAction(
     const allowMultiselect =
       readBooleanParam(params, "allowMultiselect") ?? readBooleanParam(params, "pollMulti");
     const durationSeconds =
-      readNumberParam(params, "durationSeconds", { integer: true }) ??
-      readNumberParam(params, "pollDurationSeconds", {
-        integer: true,
-        strict: true,
+      readPositiveIntegerParam(params, "durationSeconds", {
+        message: "durationSeconds must be a positive integer.",
+      }) ??
+      readPositiveIntegerParam(params, "pollDurationSeconds", {
+        message: "pollDurationSeconds must be a positive integer.",
       });
     const durationHours =
-      readNumberParam(params, "durationHours", { integer: true }) ??
-      readNumberParam(params, "pollDurationHours", {
-        integer: true,
-        strict: true,
+      readPositiveIntegerParam(params, "durationHours", {
+        message: "durationHours must be a positive integer.",
+      }) ??
+      readPositiveIntegerParam(params, "pollDurationHours", {
+        message: "pollDurationHours must be a positive integer.",
       });
     const replyToMessageId = readTelegramReplyToMessageId(params);
     const messageThreadId = readTelegramThreadId(params);
@@ -607,10 +629,12 @@ export async function handleTelegramAction(
       throw new Error("Telegram deleteMessage is disabled.");
     }
     const chatId = readTelegramChatId(params);
-    const messageId = readNumberParam(params, "messageId", {
-      required: true,
-      integer: true,
+    const messageId = readPositiveIntegerParam(params, "messageId", {
+      message: "messageId must be a positive integer.",
     });
+    if (messageId === undefined) {
+      throw new Error("messageId required");
+    }
     const token = resolveTelegramToken(cfg, { accountId }).token;
     if (!token) {
       throw new Error(
@@ -634,10 +658,12 @@ export async function handleTelegramAction(
       throw new Error("Telegram editMessage is disabled.");
     }
     const chatId = readTelegramChatId(params);
-    const messageId = readNumberParam(params, "messageId", {
-      required: true,
-      integer: true,
+    const messageId = readPositiveIntegerParam(params, "messageId", {
+      message: "messageId must be a positive integer.",
     });
+    if (messageId === undefined) {
+      throw new Error("messageId required");
+    }
     const content =
       readStringParam(params, "content", { allowEmpty: false }) ??
       readStringParam(params, "message", { required: true, allowEmpty: false });
@@ -722,7 +748,10 @@ export async function handleTelegramAction(
       );
     }
     const query = readStringParam(params, "query", { required: true });
-    const limit = readNumberParam(params, "limit", { integer: true }) ?? 5;
+    const limit =
+      readPositiveIntegerParam(params, "limit", {
+        message: "limit must be a positive integer.",
+      }) ?? 5;
     const results = telegramActionRuntime.searchStickers(query, limit);
     return jsonResult({
       ok: true,
diff --git a/src/agents/tools/common.params.test.ts b/src/agents/tools/common.params.test.ts
index b9bc3736059..c797f76d130 100644
--- a/src/agents/tools/common.params.test.ts
+++ b/src/agents/tools/common.params.test.ts
@@ -94,6 +94,7 @@ describe("readNumberParam", () => {
 
   it("throws for invalid present positive integer params", () => {
     expect(readPositiveIntegerParam({ timeoutMs: "42" }, "timeoutMs")).toBe(42);
+    expect(readPositiveIntegerParam({ timeoutMs: null }, "timeoutMs")).toBeUndefined();
     expect(() => readPositiveIntegerParam({ timeoutMs: "42.5" }, "timeoutMs")).toThrow(
       "timeoutMs must be a positive integer",
     );
diff --git a/src/agents/tools/common.ts b/src/agents/tools/common.ts
index 67f0ce0e7a0..dfb8a71f1f2 100644
--- a/src/agents/tools/common.ts
+++ b/src/agents/tools/common.ts
@@ -218,7 +218,7 @@ export function readPositiveIntegerParam(
     positiveInteger: true,
     strict: true,
   });
-  if (value === undefined && readParamRaw(params, key) !== undefined) {
+  if (value === undefined && readParamRaw(params, key) != null) {
     throw new ToolInputError(options.message ?? `${key} must be a positive integer`);
   }
   if (value !== undefined && options.max !== undefined && value > options.max) {
diff --git a/src/plugin-sdk/channel-actions.ts b/src/plugin-sdk/channel-actions.ts
index c58a78c4cc5..ffc2e6092ad 100644
--- a/src/plugin-sdk/channel-actions.ts
+++ b/src/plugin-sdk/channel-actions.ts
@@ -13,6 +13,7 @@ export {
   jsonResult,
   parseAvailableTags,
   readNumberParam,
+  readPositiveIntegerParam,
   readReactionParams,
   readStringArrayParam,
   readStringOrNumberParam,