diff --git a/extensions/codex/src/app-server/config.test.ts b/extensions/codex/src/app-server/config.test.ts
index 80edd717d4c..cba17376d2e 100644
--- a/extensions/codex/src/app-server/config.test.ts
+++ b/extensions/codex/src/app-server/config.test.ts
@@ -2,6 +2,7 @@ import fs from "node:fs/promises";
 import { describe, expect, it } from "vitest";
 import {
   CODEX_APP_SERVER_CONFIG_KEYS,
+  codexAppServerStartOptionsKey,
   readCodexPluginConfig,
   resolveCodexAppServerRuntimeOptions,
 } from "./config.js";
@@ -75,6 +76,29 @@ describe("Codex app-server config", () => {
     );
   });
 
+  it("derives distinct shared-client keys for distinct auth tokens without exposing them", () => {
+    const first = codexAppServerStartOptionsKey({
+      transport: "websocket",
+      command: "codex",
+      args: [],
+      url: "ws://127.0.0.1:39175",
+      authToken: "tok_first",
+      headers: {},
+    });
+    const second = codexAppServerStartOptionsKey({
+      transport: "websocket",
+      command: "codex",
+      args: [],
+      url: "ws://127.0.0.1:39175",
+      authToken: "tok_second",
+      headers: {},
+    });
+
+    expect(first).not.toEqual(second);
+    expect(first).not.toContain("tok_first");
+    expect(second).not.toContain("tok_second");
+  });
+
   it("keeps runtime config keys aligned with manifest schema and UI hints", async () => {
     const manifest = JSON.parse(
       await fs.readFile(new URL("../../openclaw.plugin.json", import.meta.url), "utf8"),
diff --git a/extensions/codex/src/app-server/config.ts b/extensions/codex/src/app-server/config.ts
index 12a9c749cf4..3b2875588da 100644
--- a/extensions/codex/src/app-server/config.ts
+++ b/extensions/codex/src/app-server/config.ts
@@ -1,3 +1,4 @@
+import { createHash } from "node:crypto";
 import { z } from "zod";
 
 export type CodexAppServerTransportMode = "stdio" | "websocket";
@@ -156,7 +157,7 @@ export function codexAppServerStartOptionsKey(options: CodexAppServerStartOption
     command: options.command,
     args: options.args,
     url: options.url ?? null,
-    authToken: options.authToken ? "<set>" : null,
+    authToken: hashSecretForKey(options.authToken),
     headers: Object.entries(options.headers).toSorted(([left], [right]) =>
       left.localeCompare(right),
     ),
@@ -223,6 +224,13 @@ function readNonEmptyString(value: unknown): string | undefined {
   return trimmed || undefined;
 }
 
+function hashSecretForKey(value: string | undefined): string | null {
+  if (!value) {
+    return null;
+  }
+  return createHash("sha256").update(value).digest("hex");
+}
+
 function splitShellWords(value: string): string[] {
   const words: string[] = [];
   let current = "";
diff --git a/extensions/codex/src/app-server/shared-client.test.ts b/extensions/codex/src/app-server/shared-client.test.ts
index 54ef15aa6bd..a41109bde1a 100644
--- a/extensions/codex/src/app-server/shared-client.test.ts
+++ b/extensions/codex/src/app-server/shared-client.test.ts
@@ -102,4 +102,46 @@ describe("shared Codex app-server client", () => {
       }),
     );
   });
+
+  it("restarts the shared client when the bridged auth token changes", async () => {
+    const first = createClientHarness();
+    const second = createClientHarness();
+    const startSpy = vi
+      .spyOn(CodexAppServerClient, "start")
+      .mockReturnValueOnce(first.client)
+      .mockReturnValueOnce(second.client);
+
+    const firstList = listCodexAppServerModels({
+      timeoutMs: 1000,
+      startOptions: {
+        transport: "websocket",
+        command: "codex",
+        args: [],
+        url: "ws://127.0.0.1:39175",
+        authToken: "tok-first",
+        headers: {},
+      },
+    });
+    await sendInitializeResult(first, "openclaw/0.118.0 (macOS; test)");
+    await sendEmptyModelList(first);
+    await expect(firstList).resolves.toEqual({ models: [] });
+
+    const secondList = listCodexAppServerModels({
+      timeoutMs: 1000,
+      startOptions: {
+        transport: "websocket",
+        command: "codex",
+        args: [],
+        url: "ws://127.0.0.1:39175",
+        authToken: "tok-second",
+        headers: {},
+      },
+    });
+    await sendInitializeResult(second, "openclaw/0.118.0 (macOS; test)");
+    await sendEmptyModelList(second);
+    await expect(secondList).resolves.toEqual({ models: [] });
+
+    expect(startSpy).toHaveBeenCalledTimes(2);
+    expect(first.process.kill).toHaveBeenCalledWith("SIGTERM");
+  });
 });