diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1172c239ae9..09f2ebb487e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -34,6 +34,7 @@ Docs: https://docs.openclaw.ai
 - Proxy/audio: convert standard `FormData` bodies before proxy-backed undici fetches, so audio transcription and multipart uploads no longer send `[object FormData]` when `HTTP_PROXY` or `HTTPS_PROXY` is configured. Fixes #48554. Thanks @dco5.
 - Gateway/diagnostics: include a bounded redacted startup error message in stability bundles, so crash-loop reports identify the failing plugin or contract without exposing secrets. Refs #75797. Thanks @ymebosma.
 - Gateway/pricing: abort in-flight model pricing catalog fetches when Gateway shutdown stops the refresh loop, and avoid post-stop cache writes or refresh timers. Fixes #72208. Thanks @rzcq.
+- Codex/app-server: make startup retry cleanup ownership-aware so concurrent Codex lanes cannot close another lane's freshly restarted shared app-server client. Thanks @vincentkoc.
 - Control UI/Talk: allow the OpenAI Realtime WebRTC offer endpoint through the Control UI CSP, configure browser sessions with explicit VAD/transcription input settings, and surface OpenAI realtime error/lifecycle events instead of leaving Talk stuck as live with no diagnostic. Fixes #73427.
 - Plugins: clarify config-selected duplicate plugin override diagnostics and document manifest schema updates for bundled-plugin forks. Fixes #8582. Thanks @sachah.
 - CLI backends/Claude: make live-session JSONL turn caps bounded and configurable via `reliability.outputLimits`, raising the default guard for tool-heavy Claude CLI turns while preserving memory limits. Fixes #75838. Thanks @hcordoba840.
diff --git a/extensions/codex/src/app-server/run-attempt.ts b/extensions/codex/src/app-server/run-attempt.ts
index 3f4ec9aa2c3..f4856592810 100644
--- a/extensions/codex/src/app-server/run-attempt.ts
+++ b/extensions/codex/src/app-server/run-attempt.ts
@@ -78,7 +78,7 @@ import {
 } from "./protocol.js";
 import { readCodexAppServerBinding, type CodexAppServerThreadBinding } from "./session-binding.js";
 import { readCodexMirroredSessionHistoryMessages } from "./session-history.js";
-import { clearSharedCodexAppServerClient } from "./shared-client.js";
+import { clearSharedCodexAppServerClientIfCurrent } from "./shared-client.js";
 import {
   buildDeveloperInstructions,
   buildTurnStartParams,
@@ -489,6 +489,7 @@ export async function runCodexAppServerAttempt(
   let thread: CodexAppServerThreadBinding;
   let trajectoryEndRecorded = false;
   let nativeHookRelay: NativeHookRelayRegistrationHandle | undefined;
+  let startupClientForCleanup: CodexAppServerClient | undefined;
   try {
     emitCodexAppServerEvent(params, {
       stream: "codex_app_server.lifecycle",
@@ -516,12 +517,15 @@ export async function runCodexAppServerAttempt(
       timeoutFloorMs: options.startupTimeoutFloorMs,
       signal: runAbortController.signal,
       operation: async () => {
+        let attemptedClient: CodexAppServerClient | undefined;
         const startupAttempt = async () => {
           const startupClient = await clientFactory(
             appServer.start,
             startupAuthProfileId,
             agentDir,
           );
+          attemptedClient = startupClient;
+          startupClientForCleanup = startupClient;
           await ensureCodexComputerUse({
             client: startupClient,
             pluginConfig: options.pluginConfig,
@@ -549,18 +553,24 @@ export async function runCodexAppServerAttempt(
             "codex app-server connection closed during startup; restarting app-server and retrying",
             { error },
           );
-          clearSharedCodexAppServerClient();
+          const failedClient = attemptedClient;
+          clearSharedCodexAppServerClientIfCurrent(failedClient);
+          if (startupClientForCleanup === failedClient) {
+            startupClientForCleanup = undefined;
+          }
+          attemptedClient = undefined;
           return await startupAttempt();
         }
       },
     }));
+    startupClientForCleanup = undefined;
     emitCodexAppServerEvent(params, {
       stream: "codex_app_server.lifecycle",
       data: { phase: "thread_ready", threadId: thread.threadId },
     });
   } catch (error) {
     nativeHookRelay?.unregister();
-    clearSharedCodexAppServerClient();
+    clearSharedCodexAppServerClientIfCurrent(startupClientForCleanup);
     params.abortSignal?.removeEventListener("abort", abortFromUpstream);
     throw error;
   }
diff --git a/extensions/codex/src/app-server/shared-client.test.ts b/extensions/codex/src/app-server/shared-client.test.ts
index 66e74765e01..dd5318c3b1c 100644
--- a/extensions/codex/src/app-server/shared-client.test.ts
+++ b/extensions/codex/src/app-server/shared-client.test.ts
@@ -31,6 +31,7 @@ vi.mock("openclaw/plugin-sdk/provider-auth", () => ({
 
 let listCodexAppServerModels: typeof import("./models.js").listCodexAppServerModels;
 let clearSharedCodexAppServerClient: typeof import("./shared-client.js").clearSharedCodexAppServerClient;
+let clearSharedCodexAppServerClientIfCurrent: typeof import("./shared-client.js").clearSharedCodexAppServerClientIfCurrent;
 let createIsolatedCodexAppServerClient: typeof import("./shared-client.js").createIsolatedCodexAppServerClient;
 let resetSharedCodexAppServerClientForTests: typeof import("./shared-client.js").resetSharedCodexAppServerClientForTests;
 
@@ -54,6 +55,7 @@ describe("shared Codex app-server client", () => {
     ({ listCodexAppServerModels } = await import("./models.js"));
     ({
       clearSharedCodexAppServerClient,
+      clearSharedCodexAppServerClientIfCurrent,
       createIsolatedCodexAppServerClient,
       resetSharedCodexAppServerClientForTests,
     } = await import("./shared-client.js"));
@@ -293,6 +295,32 @@ describe("shared Codex app-server client", () => {
     expect(second.process.kill).not.toHaveBeenCalled();
   });
 
+  it("only clears the shared client that is still current", async () => {
+    const first = createClientHarness();
+    const second = createClientHarness();
+    vi.spyOn(CodexAppServerClient, "start")
+      .mockReturnValueOnce(first.client)
+      .mockReturnValueOnce(second.client);
+
+    const firstList = listCodexAppServerModels({ timeoutMs: 1000 });
+    await sendInitializeResult(first, "openclaw/0.125.0 (macOS; test)");
+    await sendEmptyModelList(first);
+    await expect(firstList).resolves.toEqual({ models: [] });
+
+    expect(clearSharedCodexAppServerClientIfCurrent(first.client)).toBe(true);
+    expect(first.process.kill).toHaveBeenCalledWith("SIGTERM");
+
+    const secondList = listCodexAppServerModels({ timeoutMs: 1000 });
+    await sendInitializeResult(second, "openclaw/0.125.0 (macOS; test)");
+    await sendEmptyModelList(second);
+    await expect(secondList).resolves.toEqual({ models: [] });
+
+    expect(clearSharedCodexAppServerClientIfCurrent(first.client)).toBe(false);
+    expect(second.process.kill).not.toHaveBeenCalled();
+    expect(clearSharedCodexAppServerClientIfCurrent(second.client)).toBe(true);
+    expect(second.process.kill).toHaveBeenCalledWith("SIGTERM");
+  });
+
   it("uses a fresh websocket Authorization header after shared-client token rotation", async () => {
     const server = new WebSocketServer({ host: "127.0.0.1", port: 0 });
     const authHeaders: Array<string | undefined> = [];
diff --git a/extensions/codex/src/app-server/shared-client.ts b/extensions/codex/src/app-server/shared-client.ts
index f29945d2fa1..1487b7bd84f 100644
--- a/extensions/codex/src/app-server/shared-client.ts
+++ b/extensions/codex/src/app-server/shared-client.ts
@@ -134,6 +134,23 @@ export function clearSharedCodexAppServerClient(): void {
   client?.close();
 }
 
+export function clearSharedCodexAppServerClientIfCurrent(
+  client: CodexAppServerClient | undefined,
+): boolean {
+  if (!client) {
+    return false;
+  }
+  const state = getSharedCodexAppServerClientState();
+  if (state.client !== client) {
+    return false;
+  }
+  state.client = undefined;
+  state.promise = undefined;
+  state.key = undefined;
+  client.close();
+  return true;
+}
+
 export async function clearSharedCodexAppServerClientAndWait(options?: {
   exitTimeoutMs?: number;
   forceKillDelayMs?: number;