Alpha prerelease (0.148.0-alpha.2 → 0.148.0-alpha.4): skills support is reworked and folded into the main skills/config paths, a diagnostics subsystem lands, and the o1 model id is added, plus env-var and config cleanups.
Changelog
[changed] Skills support is reworked: the separate core-skills crate is removed and skill loading, host merge, host prompts/outcomes, and skills config now live under the shared skills and config codepaths.
[new] A diagnostics subsystem is included for server/client diagnostic requests and related tooling.
[new]o1 is available as a model identifier.
[new] RMCP client support for an event-notification transport.
[changed] Config requirements and lockfile schema are expanded (including auto-review requirements, base-instruction metadata, and richer model defaults).
[new] Additional thread list/load response payloads and account token-usage daily buckets for history and usage surfaces.
[new] Plugin-related metadata for hook summaries, share principals, and remote plugin pagination.
[new] Guardian warning notifications and external-agent config migration items in the data model.
[changed] TUI/input handling gains a delete_to_line_end event; repository failure is surfaced as its own notification.
[removed]CODEX_PERMISSION_PROFILE is no longer recognized.
[changed] Cloud-tasks and exec-server env knobs are renamed for clarity/correctness: CODEX_CLOUD_TASKS_FORCE_INTERNALSOCKS5 replaces CODEX_CLOUD_TASKS_FORCE_INTERNAL, and CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSE replaces the misspelled CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSEC.
Under the hood
Workspace layout drops core-skills and adds diagnostics; skills host-merge/prompt/outcome modules and config skills settings replace the old injection/loader stack.
Exec path no longer carries the JSONL event processor or the exec-server relay proto stubs; TUI turn runtime code is trimmed accordingly.
Hook handler configuration distinguishes agent-hooks vs prompt handlers more clearly; several internal request/error and marketplace source enums are tightened.
Dependency and version locks are bumped for 0.148.0-alpha.4.
Upgrade notes
If you relied on CODEX_PERMISSION_PROFILE, remove or replace that configuration; it is no longer read.
Rename any use of CODEX_CLOUD_TASKS_FORCE_INTERNAL to CODEX_CLOUD_TASKS_FORCE_INTERNALSOCKS5, and CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSEC to CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSE.
Custom integrations that parsed the old core-skills layout or the previous config-requirements shape should follow the new skills/config types (field sets have grown and a few legacy requirement stubs were dropped).
content/
Browse captured content/
Same tree as codex-cli/latest/content for this version. Open the full browser for sidebar navigation between docs and other files.
