diff --git a/Dockerfile b/Dockerfile
index 1924fcef5a..a67659f493 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -236,6 +236,11 @@ FROM runner-base AS runner-cli
 # runner-base runs.
 USER root
 
+# The CLI image can use the internal ChatGPT Web (Codex) Chromium sidecar over
+# CDP without installing a second browser in this container.
+COPY --from=builder /app/node_modules/playwright-core ./node_modules/playwright-core
+COPY --from=builder /app/node_modules/playwright ./node_modules/playwright
+
 # Install system dependencies required by openclaw (git+ssh references).
 RUN --mount=type=cache,id=apt-cache,target=/var/cache/apt,sharing=locked \
   --mount=type=cache,id=apt-lists,target=/var/lib/apt/lists,sharing=locked \
diff --git a/bin/chatgpt-web-codex-mcp.mjs b/bin/chatgpt-web-codex-mcp.mjs
new file mode 100644
index 0000000000..6a686fb256
--- /dev/null
+++ b/bin/chatgpt-web-codex-mcp.mjs
@@ -0,0 +1,56 @@
+#!/usr/bin/env node
+
+import { existsSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath, pathToFileURL } from "node:url";
+
+const here = dirname(fileURLToPath(import.meta.url));
+const root = join(here, "..");
+
+export function resolveChatGptWebCodexMcpEntry(rootDir = root, exists = existsSync) {
+  const candidates = [
+    join(
+      rootDir,
+      "dist",
+      "open-sse",
+      "vendor",
+      "codex-chatgpt-web",
+      "adapters",
+      "chatgpt-web",
+      "mcp-server.js"
+    ),
+    join(
+      rootDir,
+      "open-sse",
+      "vendor",
+      "codex-chatgpt-web",
+      "adapters",
+      "chatgpt-web",
+      "mcp-server.ts"
+    ),
+  ];
+  return candidates.find((candidate) => exists(candidate)) ?? null;
+}
+
+export async function startChatGptWebCodexMcp(args = process.argv.slice(2), rootDir = root) {
+  const socketIndex = args.indexOf("--broker-socket");
+  const brokerSocketPath = socketIndex >= 0 ? args[socketIndex + 1] : undefined;
+  if (!brokerSocketPath) throw new Error("--broker-socket is required");
+  const entry = resolveChatGptWebCodexMcpEntry(rootDir);
+  if (!entry) throw new Error("ChatGPT Web (Codex) MCP entrypoint was not found");
+  if (entry.endsWith(".ts")) {
+    const { register } = await import("node:module");
+    register("tsx/esm", pathToFileURL(`${rootDir}/`));
+  }
+  const module = await import(pathToFileURL(entry).href);
+  await module.runChatGptMcpServer({ brokerSocketPath });
+}
+
+if (process.argv[1] && fileURLToPath(import.meta.url) === process.argv[1]) {
+  startChatGptWebCodexMcp().catch((error) => {
+    console.error(
+      `ChatGPT Web (Codex) MCP konnte nicht gestartet werden: ${error?.message || error}`
+    );
+    process.exit(1);
+  });
+}
diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index f65c2b1335..f5e4e7d826 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -46,6 +46,8 @@ services:
     depends_on:
       redis:
         condition: service_healthy
+      chatgpt-web-codex-browser:
+        condition: service_started
     build:
       context: .
       target: runner-cli
@@ -67,6 +69,7 @@ services:
       - HOSTNAME=0.0.0.0
       - DATA_DIR=/app/data
       - OMNIROUTE_BASE_PATH=${OMNIROUTE_BASE_PATH:-}
+      - CHATGPT_WEB_CODEX_CDP_URL=http://chatgpt-web-codex-browser:9223
     ports:
       - "${PROD_DASHBOARD_PORT:-20130}:${DASHBOARD_PORT:-${PORT:-20128}}"
       - "${PROD_API_PORT:-20131}:${API_PORT:-20129}"
@@ -80,7 +83,19 @@ services:
       retries: 3
       start_period: 15s
 
+  chatgpt-web-codex-browser:
+    build:
+      context: .
+      dockerfile: docker/chatgpt-web-codex-browser/Dockerfile
+    image: omniroute:chatgpt-web-codex-browser
+    restart: unless-stopped
+    shm_size: "2gb"
+    volumes:
+      - chatgpt-web-codex-browser-prod-data:/browser-profile
+
 volumes:
+  chatgpt-web-codex-browser-prod-data:
+    name: omniroute-chatgpt-web-codex-browser-prod-data
   omniroute-prod-data:
     name: omniroute-prod-data
   redis-prod-data:
diff --git a/docker-compose.yml b/docker-compose.yml
index b20b067788..b77542aaa2 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -98,6 +98,21 @@ services:
       args:
         OMNIROUTE_BASE_PATH: ${OMNIROUTE_BASE_PATH:-}
     image: omniroute:web
+    depends_on:
+      chatgpt-web-codex-browser:
+        condition: service_started
+    environment:
+      - DATA_DIR=/app/data
+      - PORT=${PORT:-20128}
+      - DASHBOARD_PORT=${DASHBOARD_PORT:-20128}
+      - API_PORT=${API_PORT:-20129}
+      - API_HOST=${API_HOST:-0.0.0.0}
+      - LIVE_WS_PORT=${LIVE_WS_PORT:-20132}
+      - LIVE_WS_HOST=${LIVE_WS_HOST:-0.0.0.0}
+      - LIVE_WS_ALLOWED_ORIGINS=${LIVE_WS_ALLOWED_ORIGINS:-http://localhost:20128,http://127.0.0.1:20128}
+      - REDIS_URL=${REDIS_URL:-redis://redis:6379}
+      - OMNIROUTE_BASE_PATH=${OMNIROUTE_BASE_PATH:-}
+      - CHATGPT_WEB_CODEX_CDP_URL=http://chatgpt-web-codex-browser:9223
     ports:
       - "${DASHBOARD_PORT:-20128}:${DASHBOARD_PORT:-20128}"
       - "${API_PORT:-20129}:${API_PORT:-20129}"
@@ -105,6 +120,20 @@ services:
     profiles:
       - web
 
+  # Internal-only Chromium runtime for ChatGPT Web (Codex). No CDP or browser
+  # UI port is published to the host.
+  chatgpt-web-codex-browser:
+    build:
+      context: .
+      dockerfile: docker/chatgpt-web-codex-browser/Dockerfile
+    image: omniroute:chatgpt-web-codex-browser
+    restart: unless-stopped
+    shm_size: "2gb"
+    volumes:
+      - chatgpt-web-codex-browser-data:/browser-profile
+    profiles:
+      - web
+
   # ── Profile: cli (CLIs installed inside container) ─────────────────
   omniroute-cli:
     <<: *common
@@ -252,6 +281,8 @@ services:
       - cliproxyapi
 
 volumes:
+  chatgpt-web-codex-browser-data:
+    name: omniroute-chatgpt-web-codex-browser-data
   cliproxyapi-data:
     name: cliproxyapi-data
   redis-data:
diff --git a/docker/chatgpt-web-codex-browser/Dockerfile b/docker/chatgpt-web-codex-browser/Dockerfile
new file mode 100644
index 0000000000..b2b3024592
--- /dev/null
+++ b/docker/chatgpt-web-codex-browser/Dockerfile
@@ -0,0 +1,10 @@
+FROM mcr.microsoft.com/playwright:v1.62.0-noble
+
+USER root
+RUN mkdir -p /browser-profile && chown -R pwuser:pwuser /browser-profile
+COPY --chown=pwuser:pwuser docker/chatgpt-web-codex-browser/cdp-proxy.mjs /opt/cdp-proxy.mjs
+USER pwuser
+
+EXPOSE 9223
+
+CMD ["/bin/sh", "-lc", "node /opt/cdp-proxy.mjs & exec $(find /ms-playwright -path '*/chrome-linux/chrome' -type f | head -n 1) --headless=new --no-sandbox --disable-dev-shm-usage --remote-debugging-port=9222 --user-data-dir=/browser-profile about:blank"]
diff --git a/docker/chatgpt-web-codex-browser/cdp-proxy.mjs b/docker/chatgpt-web-codex-browser/cdp-proxy.mjs
new file mode 100644
index 0000000000..a340348803
--- /dev/null
+++ b/docker/chatgpt-web-codex-browser/cdp-proxy.mjs
@@ -0,0 +1,72 @@
+import http from "node:http";
+import net from "node:net";
+
+const listenPort = 9223;
+const upstreamHost = "127.0.0.1";
+const upstreamPort = 9222;
+
+function proxyHeaders(headers) {
+  const next = { ...headers, host: `${upstreamHost}:${upstreamPort}` };
+  delete next.connection;
+  delete next.upgrade;
+  return next;
+}
+
+const server = http.createServer((request, response) => {
+  const upstream = http.request(
+    {
+      host: upstreamHost,
+      port: upstreamPort,
+      method: request.method,
+      path: request.url,
+      headers: proxyHeaders(request.headers),
+    },
+    (upstreamResponse) => {
+      const chunks = [];
+      upstreamResponse.on("data", (chunk) => chunks.push(chunk));
+      upstreamResponse.on("end", () => {
+        let body = Buffer.concat(chunks);
+        const contentType = String(upstreamResponse.headers["content-type"] || "");
+        if (contentType.includes("application/json")) {
+          body = Buffer.from(
+            body
+              .toString("utf8")
+              .replaceAll(`ws://${upstreamHost}:${upstreamPort}`, `ws://${request.headers.host}`)
+          );
+        }
+        const headers = { ...upstreamResponse.headers, "content-length": String(body.length) };
+        response.writeHead(upstreamResponse.statusCode || 502, headers);
+        response.end(body);
+      });
+    }
+  );
+  upstream.on("error", () => {
+    response.writeHead(503, { "content-type": "application/json" });
+    response.end(JSON.stringify({ error: "CDP browser is starting" }));
+  });
+  request.pipe(upstream);
+});
+
+server.on("upgrade", (request, socket, head) => {
+  const upstream = net.connect(upstreamPort, upstreamHost, () => {
+    const upgradeHeaders = {
+      ...request.headers,
+      host: `${upstreamHost}:${upstreamPort}`,
+      connection: "Upgrade",
+      upgrade: "websocket",
+    };
+    const headers = Object.entries(upgradeHeaders)
+      .flatMap(([name, value]) =>
+        Array.isArray(value) ? value.map((item) => `${name}: ${item}`) : [`${name}: ${value}`]
+      )
+      .join("\r\n");
+    upstream.write(
+      `${request.method} ${request.url} HTTP/${request.httpVersion}\r\n${headers}\r\n\r\n`
+    );
+    if (head.length > 0) upstream.write(head);
+    socket.pipe(upstream).pipe(socket);
+  });
+  upstream.on("error", () => socket.destroy());
+});
+
+server.listen(listenPort, "0.0.0.0");
diff --git a/scripts/build/assembleStandalone.mjs b/scripts/build/assembleStandalone.mjs
index f61c7041ca..3d138e3c0f 100644
--- a/scripts/build/assembleStandalone.mjs
+++ b/scripts/build/assembleStandalone.mjs
@@ -156,6 +156,11 @@ const EXTRA_MODULE_ENTRIES = [
     src: ["scripts", "dev", "responses-ws-proxy.mjs"],
     dest: ["responses-ws-proxy.mjs"],
   },
+  {
+    label: "ChatGPT Web Codex MCP tunnel entrypoint",
+    src: ["bin", "chatgpt-web-codex-mcp.mjs"],
+    dest: ["bin", "chatgpt-web-codex-mcp.mjs"],
+  },
   {
     label: "webdav-handler (server-ws.mjs dependency)",
     src: ["scripts", "dev", "webdav-handler.mjs"],
diff --git a/scripts/build/pack-artifact-policy.ts b/scripts/build/pack-artifact-policy.ts
index 1decf97ff2..7d081890a1 100644
--- a/scripts/build/pack-artifact-policy.ts
+++ b/scripts/build/pack-artifact-policy.ts
@@ -41,6 +41,7 @@ export const APP_STAGING_ALLOWED_EXACT_PATHS: string[] = [
   "head-response-guard.cjs",
   "http-method-guard.cjs",
   "open-sse/mcp-server/server.js",
+  "open-sse/vendor/codex-chatgpt-web/adapters/chatgpt-web/mcp-server.js",
   // LLMLingua ONNX worker — esbuild'd standalone .js spawned via worker_threads
   // (the Next.js bundler can't trace the computed Worker path). Kept like the MCP server.
   "open-sse/services/compression/engines/llmlingua/onnxWorker.js",
@@ -48,6 +49,7 @@ export const APP_STAGING_ALLOWED_EXACT_PATHS: string[] = [
   "peer-stamp.mjs",
   "main-server-timeouts.mjs",
   "responses-ws-proxy.mjs",
+  "bin/chatgpt-web-codex-mcp.mjs",
   "scripts/dev/sync-env.mjs",
   "scripts/dev/tls-options.mjs",
   "server.js",
@@ -86,7 +88,9 @@ export const PACK_ARTIFACT_ROOT_ALLOWED_EXACT_PATHS: string[] = [
   ".env.example",
   "LICENSE",
   "README.md",
+  "THIRD_PARTY_NOTICES.md",
   "bin/aliasResolver.mjs",
+  "bin/chatgpt-web-codex-mcp.mjs",
   // #7808: ESM loader hook split out of bin/aliasResolver.mjs to silence CodeQL
   // js/incomplete-url-substring-sanitization (the old code built a
   // `data:text/javascript,...` URL dynamically). Loaded via pathToFileURL() at
@@ -157,6 +161,7 @@ export const PACK_ARTIFACT_ROOT_ALLOWED_PATH_PREFIXES: string[] = [
 
 export const PACK_ARTIFACT_REQUIRED_PATHS: string[] = [
   "dist/open-sse/services/compression/engines/rtk/filters/generic-output.json",
+  "dist/open-sse/vendor/codex-chatgpt-web/adapters/chatgpt-web/mcp-server.js",
   "dist/open-sse/services/compression/rules/en/filler.json",
   "dist/server.js",
   "dist/server-ws.mjs",
diff --git a/scripts/build/prepublish.ts b/scripts/build/prepublish.ts
index bd8612adfa..c1167ff470 100644
--- a/scripts/build/prepublish.ts
+++ b/scripts/build/prepublish.ts
@@ -254,6 +254,42 @@ if (existsSync(mcpSrcFile)) {
   }
 }
 
+const chatGptWebCodexMcpSrcFile = join(
+  ROOT,
+  "open-sse",
+  "vendor",
+  "codex-chatgpt-web",
+  "adapters",
+  "chatgpt-web",
+  "mcp-server.ts"
+);
+const chatGptWebCodexMcpDestFile = join(
+  DIST_DIR,
+  "open-sse",
+  "vendor",
+  "codex-chatgpt-web",
+  "adapters",
+  "chatgpt-web",
+  "mcp-server.js"
+);
+if (existsSync(chatGptWebCodexMcpSrcFile)) {
+  console.log("  🔨 Bundling ChatGPT Web (Codex) MCP bridge...");
+  mkdirSync(dirname(chatGptWebCodexMcpDestFile), { recursive: true });
+  execFileSync(
+    NPX_BIN,
+    [
+      "esbuild",
+      "open-sse/vendor/codex-chatgpt-web/adapters/chatgpt-web/mcp-server.ts",
+      "--bundle",
+      "--platform=node",
+      "--packages=external",
+      "--format=esm",
+      "--outfile=dist/open-sse/vendor/codex-chatgpt-web/adapters/chatgpt-web/mcp-server.js",
+    ],
+    { cwd: ROOT, stdio: "inherit" }
+  );
+}
+
 // ── Step 8.6: Bundle LLMLingua ONNX worker ────────────────────────────
 // The worker is spawned via worker_threads at a path the Next.js bundler cannot
 // statically trace, so it must ship as a standalone .js (mirrors the MCP-server
diff --git a/scripts/dev/responses-ws-proxy.mjs b/scripts/dev/responses-ws-proxy.mjs
index 1b585e4618..7e2a5fbc15 100644
--- a/scripts/dev/responses-ws-proxy.mjs
+++ b/scripts/dev/responses-ws-proxy.mjs
@@ -585,12 +585,18 @@ class ResponsesWsSession {
   // preparedContext, but never touches this.upstream/this.upstreamReady; the caller decides
   // whether a new upstream socket is needed.
   async runPrepare(message, responseBody) {
-    const prepared = await callInternal(this.fetchImpl, this.baseUrl, this.bridgeSecret, "prepare", {
-      requestUrl: this.requestUrl,
-      headers: getAuthHeaders(this.requestUrl, this.requestHeaders),
-      message,
-      response: responseBody,
-    });
+    const prepared = await callInternal(
+      this.fetchImpl,
+      this.baseUrl,
+      this.bridgeSecret,
+      "prepare",
+      {
+        requestUrl: this.requestUrl,
+        headers: getAuthHeaders(this.requestUrl, this.requestHeaders),
+        message,
+        response: responseBody,
+      }
+    );
 
     if (!prepared.ok) {
       const message2 =
@@ -602,6 +608,7 @@ class ResponsesWsSession {
       const error = new Error(message2);
       error.code = code;
       error.status = prepared.status;
+      if (code === "responses_websocket_http_fallback") error.httpFallback = true;
       throw error;
     }
 
@@ -716,11 +723,28 @@ class ResponsesWsSession {
         // otherwise every turn after the first bypasses the whole pipeline. This reuses
         // the already-established upstream transport; it must NOT recreate the socket.
         const prepared = await this.runPrepare(message, nextTurnBody);
-        this.upstream.send(jsonStringifySafe(withPreparedResponseCreate(message, prepared.json.response)));
+        this.upstream.send(
+          jsonStringifySafe(withPreparedResponseCreate(message, prepared.json.response))
+        );
         return;
       }
       this.upstream.send(jsonStringifySafe(message));
     } catch (error) {
+      if (error?.httpFallback) {
+        const failurePayload = this.sendFailure(
+          "responses_websocket_http_fallback",
+          "Retry this request over HTTP/SSE Responses"
+        );
+        void this.persistHistory({
+          status: 426,
+          success: false,
+          errorCode: "responses_websocket_http_fallback",
+          errorMessage: "HTTP/SSE Responses transport required",
+          terminalMessage: failurePayload,
+        });
+        this.close(1013, "http_fallback_required");
+        return;
+      }
       const code = error?.code || "upstream_websocket_connect_failed";
       const messageText = error instanceof Error ? error.message : String(error);
       const failurePayload = this.sendFailure(code, messageText);