diff --git a/src/commands/health.snapshot.test.ts b/src/commands/health.snapshot.test.ts
index de5a427007e..ba7ca3f5f87 100644
--- a/src/commands/health.snapshot.test.ts
+++ b/src/commands/health.snapshot.test.ts
@@ -5,6 +5,7 @@ import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vite
 import type { ChannelAccountSnapshot } from "../channels/plugins/types.js";
 import type { ChannelPlugin } from "../channels/plugins/types.js";
 import { createPluginRecord } from "../plugins/status.test-helpers.js";
+import { MAX_TIMER_TIMEOUT_MS } from "../shared/number-coercion.js";
 import type { HealthSummary } from "./health.js";
 
 let testConfig: Record<string, unknown> = {};
@@ -474,6 +475,23 @@ describe("getHealthSnapshot", () => {
     vi.unstubAllEnvs();
   });
 
+  it("clamps oversized probe timeouts", async () => {
+    testConfig = {
+      session: { store: "/tmp/x" },
+      channels: { telegram: { botToken: "123:test" } },
+    };
+    testStore = {};
+    const timeouts: number[] = [];
+    probeTelegramAccountForTestOverride = async (_account, timeoutMs) => {
+      timeouts.push(timeoutMs);
+      return { ok: true };
+    };
+
+    await getHealthSnapshot({ timeoutMs: Number.MAX_SAFE_INTEGER });
+
+    expect(timeouts).toEqual([MAX_TIMER_TIMEOUT_MS]);
+  });
+
   it("includes active plugin load errors in the health snapshot", async () => {
     testConfig = { session: { store: "/tmp/x" } };
     testStore = {};
diff --git a/src/commands/health.ts b/src/commands/health.ts
index fc125c5cc90..66329b0326a 100644
--- a/src/commands/health.ts
+++ b/src/commands/health.ts
@@ -1,3 +1,4 @@
+import { resolveTimerTimeoutMs } from "@openclaw/normalization-core/number-coercion";
 import { asNullableRecord } from "@openclaw/normalization-core/record-coerce";
 import { styleHealthChannelLine } from "../../packages/terminal-core/src/health-style.js";
 import { isRich } from "../../packages/terminal-core/src/theme.js";
@@ -428,7 +429,7 @@ export async function getHealthSnapshot(params?: {
     (await buildSessionSummary(resolveStorePath(cfg.session?.store, { agentId: defaultAgentId })));
 
   const start = Date.now();
-  const cappedTimeout = timeoutMs === undefined ? DEFAULT_TIMEOUT_MS : Math.max(50, timeoutMs);
+  const cappedTimeout = resolveTimerTimeoutMs(timeoutMs, DEFAULT_TIMEOUT_MS, 50);
   const doProbe = params?.probe !== false;
   const includeSensitive = params?.includeSensitive !== false;
   const channels: Record<string, ChannelHealthSummary> = {};