Codex Chrome Extension Enables Signed-In Browser Tasks

The Breakthrough

OpenAI released Codex for Chrome extension alongside CLI versions 0.128 and 0.129, which enable Codex to perform tasks in users' real signed-in browser sessions and enhance long-running agent workflows.

What Actually Worked

• Users add the Chrome plugin in Codex, install the extension, approve permissions, and confirm connection; Codex then suggests or calls Chrome directly (e.g., @chrome open Salesforce and update this account from these notes), running tasks in grouped tabs without hijacking the browser.
• Codex prompts for host-based permissions before new sites (allow for chat, always allow host, or decline); users configure allowlists and blocklists in computer use settings, with scoped task-only access to browser history (no always-allow).
• Version 0.129 adds Vim-style editing in the composer via /vim (configure default mode and keymaps), improved resume/fork with redesigned picker, raw scrollback, IDE context injection, and workspace-aware diffs.
• Version 0.129 upgrades plugin management with workspace sharing, access controls, source filtering, local share path tracking, marketplace improvements, remote bundle sync, and admin disabled states; hooks via /hooks run before/after compaction or add pre-tool context.
• Version 0.128 introduces persisted goal workflows (/goal), codex update command, configurable keymaps, plan mode nudges, permission profiles (sandbox, working directory controls), and live status line/title edits.

Context

Codex previously handled code, terminal, and in-app browser tasks well but struggled at browser boundaries needing authentication, like internal dashboards or SaaS tools. The Chrome extension bridges this by accessing real sessions in parallel tabs, while CLI updates add controllability for teams via permissions, resumability, and programmability. These changes position Codex as a full agent workspace integrating repo, terminal, browser, plugins, and approvals, prioritizing safety for production use.

Notable Quotes

• "Codex can now use Chrome through an extension that means it can work with real websites in your actual browser session including websites where you're already signed in."
• "Chrome is useful when the task needs your real browser state for example if Codex needs to work inside Salesforce LinkedIn Gmail some internal company tool."
• "OpenAI is doing the right thing conceptually because browser agents are powerful but also very risky."

Content References

No external works are specifically referenced.