diff --git a/extensions/minimax/tts.test.ts b/extensions/minimax/tts.test.ts
new file mode 100644
index 00000000000..f6aeb049f5b
--- /dev/null
+++ b/extensions/minimax/tts.test.ts
@@ -0,0 +1,48 @@
+import { MAX_TIMER_TIMEOUT_MS } from "openclaw/plugin-sdk/number-runtime";
+import { afterEach, describe, expect, it, vi } from "vitest";
+
+const fetchWithSsrFGuardMock = vi.hoisted(() => vi.fn());
+
+vi.mock("openclaw/plugin-sdk/ssrf-runtime", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("openclaw/plugin-sdk/ssrf-runtime")>();
+  return {
+    ...actual,
+    fetchWithSsrFGuard: (...args: unknown[]) => fetchWithSsrFGuardMock(...args),
+  };
+});
+
+import { minimaxTTS } from "./tts.js";
+
+describe("minimaxTTS", () => {
+  afterEach(() => {
+    fetchWithSsrFGuardMock.mockReset();
+    vi.restoreAllMocks();
+  });
+
+  it("caps oversized request timeout before arming abort timers", async () => {
+    const timeoutSpy = vi.spyOn(globalThis, "setTimeout");
+    fetchWithSsrFGuardMock.mockResolvedValue({
+      response: new Response(
+        JSON.stringify({ data: { audio: Buffer.from("audio").toString("hex") } }),
+        { status: 200, headers: { "content-type": "application/json" } },
+      ),
+      release: vi.fn(async () => undefined),
+    });
+
+    const audio = await minimaxTTS({
+      text: "hello",
+      apiKey: "sk-test",
+      baseUrl: "https://api.minimax.io",
+      model: "speech-2.8-hd",
+      voiceId: "English_expressive_narrator",
+      timeoutMs: Number.MAX_SAFE_INTEGER,
+    });
+
+    expect(audio.toString()).toBe("audio");
+    expect(timeoutSpy).toHaveBeenCalledWith(expect.any(Function), MAX_TIMER_TIMEOUT_MS);
+    expect(fetchWithSsrFGuardMock.mock.calls[0]?.[0]).toMatchObject({
+      timeoutMs: MAX_TIMER_TIMEOUT_MS,
+    });
+    expect(fetchWithSsrFGuardMock.mock.calls[0]?.[0]?.init?.signal).toBeInstanceOf(AbortSignal);
+  });
+});
diff --git a/extensions/minimax/tts.ts b/extensions/minimax/tts.ts
index 22cf850dd5b..15cc4bdbb52 100644
--- a/extensions/minimax/tts.ts
+++ b/extensions/minimax/tts.ts
@@ -1,3 +1,4 @@
+import { clampTimerTimeoutMs } from "openclaw/plugin-sdk/number-runtime";
 import { assertOkOrThrowProviderError } from "openclaw/plugin-sdk/provider-http";
 import {
   fetchWithSsrFGuard,
@@ -64,9 +65,10 @@ export async function minimaxTTS(params: {
     sampleRate = 32000,
     timeoutMs,
   } = params;
+  const safeTimeoutMs = clampTimerTimeoutMs(timeoutMs) ?? 1;
 
   const controller = new AbortController();
-  const timeout = setTimeout(() => controller.abort(), timeoutMs);
+  const timeout = setTimeout(() => controller.abort(), safeTimeoutMs);
 
   try {
     const { response, release } = await fetchWithSsrFGuard({
@@ -93,7 +95,7 @@ export async function minimaxTTS(params: {
         }),
         signal: controller.signal,
       },
-      timeoutMs,
+      timeoutMs: safeTimeoutMs,
       policy: ssrfPolicyFromHttpBaseUrlAllowedHostname(baseUrl),
       auditContext: "minimax.tts",
     });