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Codex CLI

OpenAI · CLI

Codex CLI 0.154.0-alpha.6

0.154.0-alpha.3→0.154.0-alpha.6·September 7, 2026 at 6:17 PM UTC

Prerelease (0.154.0-alpha.3 → 0.154.0-alpha.6) focused on managed Git worktree sessions, removal of the standalone mcp-server command, and richer exec-server remote transport/auth options.

Changelog

  • [new] Run a session in a managed Git worktree with the global --worktree flag (also on exec, resume, fork, queue, archive/delete/unarchive flows, and related paths). Shell completions describe this as starting the session in a new managed worktree; the TUI includes worktree startup and browsing support, and /worktree is available as a slash command.
  • [new] exec-server remote connectivity gains --remote-transport with noise and direct modes, plus optional AWS SigV4 signing via --aws-sigv4, --aws-profile, --aws-region, and --aws-service (mutually coordinated with agent-identity auth where applicable).
  • [new] User verification support lands across app-server, MCP, and related clients (enroll / status / verify / delete-style flows and elicitation), so hosts can prove or check verified access when a server requests it.
  • [changed] Guardian automatic review continues to evolve: runtime, decision handling, reviewer configuration, and review-session context are reworked, and assessment/config payloads carry more detail for approve-for-me style review.
  • [changed] TUI polish: async question UI in the bottom pane, updated feedback notes, assistant directives, file citations in markdown rendering, experimental-feature and model-default session helpers, and related chat composer/rendering fixes.
  • [new] Config key exclude_slash_tmp for controlling slash-tmp exclusion behavior.
  • [removed] The codex mcp-server subcommand (start Codex as an MCP server over stdio) is gone, along with its crate and interface doc. External MCP server management remains under codex mcp.
  • [changed] Bash, fish, and zsh completions updated for --worktree, exec-server remote/AWS flags, and the mcp-server removal.

Under the hood

  • New worktree and attachment-store workspace crates underpin managed worktrees and attachment handling.
  • MCP surface area shifts toward codex-mcp (auth-change handling, client tool catalog, user-verification elicitation) after dropping the old in-tree mcp-server implementation.
  • Exec-server adds direct remote paths and client telemetry; app-server and CLI pick up verification/auth helpers.
  • Session/core pieces expand (for example reasoning-effort handling, retained context, thread metadata/compatibility fields) and Guardian V2 config/events grow additional fields.
  • Hook configuration distinguishes command vs prompt handlers more clearly; browser-use requirement and keymap-related config shapes were extended.
  • Dependency refresh: futures/bytes, rcgen/yasna, toml_parser, and log, among others.
  • Internal agents/docs guidance no longer points at maintaining app-server/README.md as the primary API doc hook; schema fixture regeneration remains the expected workflow when API shapes change.

Upgrade notes

  • If you still launch codex mcp-server, switch off that entrypoint—this alpha no longer ships it. Prefer hosting or connecting via the supported MCP client/codex mcp management flows instead of the removed stdio server command.
  • Regenerate or refresh shell completions so --worktree and the exec-server transport/SigV4 flags complete correctly and mcp-server disappears from help.
  • For remote exec-server registration, choose --remote-transport noise|direct explicitly when needed, and configure AWS SigV4 flags if your environment expects signed Direct/WebSocket handshakes rather than agent-identity auth alone.
  • Try --worktree (or /worktree) only in Git checkouts where creating a managed linked worktree is acceptable for the session’s working tree.

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README.mdDocs3.3 KBCHANGELOG.mdDocs93 BAGENTS.mdDocs21.9 KBconfig.mdDocs351 Bdocs/agents_md.mdDocs126 Bdocs/authentication.mdDocs134 Bdocs/CLA.mdDocs2 KBdocs/codex-rs/bazel.mdDocs7.4 KBdocs/codex-rs/protocol_v1.mdDocs9.2 KBdocs/config.mdDocs726 Bdocs/contributing.mdDocs2.6 KBdocs/example-config.mdDocs134 BView all 31 files in content/ browser →
Older release← 0.154.0-alpha.3Newer release→ 0.154.0-alpha.7
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