Updates

2026-08-03

• Re-checked official releases, the local CLI, and npm: stable/latest remains Codex CLI 0.146.0; npm alpha remains 0.147.0-alpha.4.
• Synchronized the current official command inventory for /copy, /rename, /pets (/pet), Windows-only /setup-default-sandbox, and /app.
• Added the documented /subagents alias for /agent and /btw alias for /side.
• Updated the cover, slash-command chapter, verification report, and both Command Master locales.

2026-08-01

• Updated the stable/latest baseline to Codex CLI 0.146.0; npm reports latest=0.146.0 and alpha=0.147.0-alpha.4.
• Added 0.145.0 paginated history, expanded Cursor/Claude Code import, Bedrock login, audio, stabilized Multi-agent V2, and safe visualization-link guidance.
• Added 0.146.0 named threads, pins, side switching, paginated forks, Agent Plugins/marketplaces, remote Code Mode hosts, custom-provider web search, executor skills, broader proxy coverage, and MCP/App refresh guidance.
• Added replay/import/fork preservation and terminal/Windows/skill-catalog reliability checks.

2026-07-10

• Updated the stable/latest baseline to Codex CLI 0.144.0; npm reports latest=0.144.0 and alpha=0.145.0-alpha.1.
• Added 0.143.0 guidance for default-enabled remote plugins, npm marketplace sources, system proxies, codex remote-control pair, default MCP tool search/session auth, Bedrock GPT-5.6 variants with max effort, and app-server environment/thread APIs.
• Added 0.144.0 guidance for selectable reset credits, app approval writes, default interactive MCP authentication, runtime-provided app-server auth, pnpm install detection, and Ultra concurrency warnings.
• Added reliability and security notes for retired-model compaction recovery, Windows sandbox deletion/runtime access, terminal-control sanitization, connector auth refresh, proxy-aware Responses WebSockets, and review improvements.

2026-07-01

• Refreshed the English handbook stable/latest baseline to Codex CLI 0.142.5; npm latest is 0.142.5 and alpha is 0.143.0-alpha.31.
• Treated 0.142.5 as a security/privacy bug-fix patch that prevents full Responses WebSocket request payloads from being written to trace logs; the feature operating baseline remains 0.142.0.
• Updated setup, security, verification, and cover metadata to match the Korean handbook.

2026-06-25

• Refreshed the English handbook baseline to Codex CLI 0.142.0; npm latest is 0.142.0 and alpha is 0.143.0-alpha.14, so team guidance remains on stable/latest.
• Added the 0.140.0~0.142.0 operating deltas: /delete, /import, /usage, codex delete <SESSION>, app-server thread/delete, Claude Code import, plugin organization, rollout token budgets, indexed web search, scheduled UTC reminders/current-time handling, multi-agent delegation modes, and app-server/exec/MCP disconnect recovery.
• Clarified that deletion policy is separate from archive policy, /import requires diff/config review, and /usage belongs in long /goal and multi-agent runbooks.
• Kept detailed command pages in the command-master book while this handbook carries the team-operations summary.

2026-06-13

• Fixed locale-leaking navigation: corrected the cover-page contents Card links from bare /books/codex-advanced/... to locale-prefixed /en/books/codex-advanced/..., so chapter navigation no longer redirects English readers into the Korean edition.
• Review pass: confirmed chapter content, model policy, and CLI baseline were unchanged in this round; the update was limited to the link fix.

2026-06-12

• Refreshed the English handbook baseline to Codex CLI 0.139.0.
• Added current operational deltas from CLI 0.138.0~0.139.0: /app Desktop handoff, code-mode standalone web search, MCP schema preservation for oneOf/allOf, plugin JSON automation, app-server account token usage, ChatGPT v2 personal access tokens, restored send-message-v2 debug command, image file-path exposure and referenced-path image edits, reasoning effort fallback shortcuts, sandbox diagnostics, resume/fork --last prompt handling, scoped MCP startup warnings, cloud-managed requirement preservation, and Cloud exec provider notes.
• Re-checked the model baseline: gpt-5.5 remains the default recommendation, gpt-5.2 and gpt-5.3-codex remain deprecated for ChatGPT sign-in, and Codex Cloud model selection remains separate.
• Kept detailed release tables in the Korean source while this English edition carries compact parity updates.

2026-06-08

• Refreshed the English handbook baseline to Codex CLI 0.137.0.
• Added the current operational deltas from CLI 0.133.0~0.137.0: goal-by-default, file-based --profile migration, named permission profiles, /archive, codex app-server --stdio, cloud-managed config bundles, remote-control grants, codex plugin list --json, and Multi-agent v2 runtime metadata.
• Kept this English edition as a compact parity summary while the Korean edition carries the detailed chapter-level changelog.

2026-05-13

• Published the English edition of the Advanced Codex Usage handbook.
• Added chapters for setup, config, memories, approvals, security, workflows, MCP, models, and governance.
• Aligned the handbook with the operating style used by the English handbook collection.

Update Policy

Update this handbook when Codex configuration, permissions, supported interfaces, model policy, MCP capabilities, or team rollout guidance changes materially.