This page is the canonical answer to:
Which OMC/OMX hooks run on native Codex hooks already, which stay on runtime fallbacks, and which are not supported yet?
For plugin installs on Codex versions that report official plugin-scoped hook support, the packaged plugin is the hook registration surface:
plugins/oh-my-codex/.codex-plugin/plugin.json→ points Codex at./hooks/hooks.jsonplugins/oh-my-codex/hooks/hooks.json→ registers the OMX lifecycle hook commands with${PLUGIN_ROOT}.codex/config.toml→ enables[features].plugin_hooks = trueand[features].goals = true
omx setup still owns the legacy/fallback native Codex artifacts for legacy
installs and older Codex versions that do not report plugin_hooks:
.codex/config.toml→ enables the installed-Codex hook flag ([features].hooks = true, or legacy[features].codex_hooks = truewhen that is the only reported feature) and[features].goals = true.codex/hooks.json→ registers the OMX-managed native hook command while preserving non-OMX hook entries already in the file.codex/config.toml→ also recordshooks.state."<hooks.json>:<event>:<group>:<handler>".trusted_hashfor the OMX-owned wrappers so recent Codex releases do not require a manual/hooksreview for setup-managed hooks
Compatibility note: Codex CLI 0.129/0.130 treats hooks as the canonical stable feature key and keeps codex_hooks only as a legacy alias. Some public hook examples may still show [features].codex_hooks = true; OMX-generated fallback config intentionally emits [features].hooks = true while setup/uninstall migration paths still accept and normalize older codex_hooks entries so existing user configs do not lose hook enablement.
For project scope, .gitignore keeps generated .codex/hooks.json out of source control.
omx uninstall removes only the OMX-managed wrapper entries from .codex/hooks.json; if user hooks remain, the file stays in place.
Project launches use a session-scoped .omx/runtime/codex-home/<session>/ mirror for Codex runtime writes; hook review/discovery tools should treat that directory as runtime mirror state and ignore its hooks.json surfaces rather than loading them alongside the canonical .codex/hooks.json.
Project-scoped resume and search discovery include generated runtime homes under .omx/runtime/codex-home/omx-*/sessions: plain omx resume and omx session search in a project-scoped repo include those session sources automatically, omx resume --project restricts resume to generated project runtime homes, and --codex-home <path> is the one-shot escape hatch for both omx resume and omx session search.
omx doctor can confirm that these files exist and are shaped correctly. It does not prove that the same shell/profile can complete an authenticated Codex request; use codex login status plus a real omx exec --skip-git-repo-check -C . "Reply with exactly OMX-EXEC-OK" smoke test for that boundary.
- Plugin-scoped Codex hooks:
plugins/oh-my-codex/hooks/hooks.jsonfor plugin installs on Codex versions with[features].plugin_hooks - Legacy/fallback native Codex hooks:
.codex/hooks.json - OMX plugin hooks:
.omx/hooks/*.mjs - tmux/runtime fallbacks:
omx tmux-hook, notify-hook, derived watcher, idle/session-end reporters
OMX only owns the wrapper entries that invoke dist/scripts/codex-native-hook.js. User-managed hook entries in the same .codex/hooks.json file are preserved across omx setup refreshes and omx uninstall.
Setup-owned trust state is limited to those generated wrapper identities; user hooks and user-owned hooks.state entries are preserved and remain subject to Codex's normal review flow.
| OMC / OMX surface | Native Codex source | OMX runtime target | Status | Notes |
|---|---|---|---|---|
session-start |
SessionStart |
session-start |
native | Native adapter refreshes leader session bookkeeping, preserves the canonical leader scope when a native subagent SessionStart is detected from rollout session_meta, restores startup developer context, and ensures .omx/ is gitignored at the repo root |
| wiki startup context | SessionStart |
session-start |
native | Wiki session-start context can append a compact omx_wiki/ summary when wiki pages exist; startup writes stay config-gated |
keyword-detector |
UserPromptSubmit |
keyword-detector |
native | Persists skill activation state and can add prompt-side developer context for top-level prompts; native subagent prompt text is treated as delegated task text, so literal workflow keywords inside a child prompt do not activate nested workflow state; $ralph prompt routing seeds workflow state only and does not launch omx ralph --prd ... |
| ultragoal bounded steering | UserPromptSubmit |
ultragoal artifacts |
native | Only explicit structured directives such as OMX_ULTRAGOAL_STEER: { ... }, omx.ultragoal.steer: { ... }, or omx ultragoal steer: { ... } are parsed; accepted/rejected/deduped attempts route through steerUltragoal, append .omx/ultragoal/ledger.jsonl, and add advisory context without changing keyword precedence |
pre-tool-use |
PreToolUse |
pre-tool-use |
native-partial | Native behavior cautions on Bash rm -rf dist, blocks inspectable inline git commit commands until Lore-format structure + the required Co-authored-by: OmX <omx@oh-my-codex.dev> trailer are present only when explicitly opted in with OMX_LORE_COMMIT_GUARD=1, emits non-blocking document-refresh warnings for mapped staged commit changes that lack rule-scoped docs/spec refresh evidence, and blocks close_agent / parallel close cleanup before it starts when a fresh native subagent capacity blocker was recorded |
native PreToolUse stdout schema |
PreToolUse |
CLI stdout | native | Codex CLI 0.141.0 accepts only systemMessage for PreToolUse; the native CLI writer strips internal decision, reason, stopReason, continue, and hookSpecificOutput fields before stdout while preserving richer internal dispatch results for tests and non-stdout callers. |
post-tool-use |
PostToolUse |
post-tool-use |
native-partial | Built-in Bash behavior covers command-not-found / permission-denied / missing-path guidance only from stderr or non-zero Bash results, ignores failure-looking strings from successful source/log reads, keeps MCP transport-death guidance scoped to MCP-like tool calls, and records a short-lived .omx/state/native-subagent-capacity-blocker.json when native subagent spawn/collab output reports agent thread limit reached; document-refresh commit warnings use PreToolUse advisory output, with PostToolUse reserved as a future fallback if Codex advisory semantics change |
| Ralph/persistence stop handling | Stop |
stop |
native-partial | Native adapter uses the documented native Stop continuation contract (decision: "block" + reason) for active Ralph runs, emits a single JSON object on Stop stdout even for no-op Stop decisions, and emits deterministic JSON continuation output if Stop dispatch fails before normal handling |
| imagegen continuation helper | Stop |
stop |
native-partial | omx imagegen continuation <session-id> --artifact <name> records .omx/state/sessions/<session>/imagegen-pending.json and queues an audited exec follow-up so built-in image_gen turns that must end immediately can resume Ralph visual QA/recovery at the next Stop checkpoint |
| Autopilot continuation | Stop |
stop |
native-partial | Native adapter continues non-terminal autopilot sessions from active session/root mode state |
| Ultrawork continuation | Stop |
stop |
native-partial | Native adapter continues non-terminal ultrawork sessions from active session/root mode state |
| UltraQA continuation | Stop |
stop |
native-partial | Native adapter continues non-terminal ultraqa sessions from active session/root mode state |
| Team-phase continuation | Stop |
stop |
native-partial | Native adapter treats per-team phase.json as canonical when deciding whether a current-session team run is still non-terminal and can re-block on later fresh Stop replies while keeping leader guidance explicit about rewriting system-generated worker auto-checkpoint commits into Lore-format final history |
ralplan skill-state continuation |
Stop |
stop |
native-partial | Native adapter can block on active skill-active-state.json for ralplan, unless active subagents are already the real in-flight owners |
deep-interview skill-state continuation |
Stop |
stop |
native-partial | Native adapter can block on active skill-active-state.json for deep-interview, unless active subagents are already the real in-flight owners |
| auto-nudge continuation | Stop |
stop |
native-partial | Native adapter continues turns that end in a permission/stall prompt, can re-fire for later fresh replies, and suppresses auto-nudge while interview / deep-interview state is active; explicit terminal lifecycle metadata should be authoritative when present, legacy blocked_on_user remains a suppress-continuation compatibility signal, and cancelled stays internal legacy-only for user-facing lifecycle summaries |
| team worker Stop nudge | Stop |
stop |
native-partial | Team worker leader nudges are lifecycle-driven: a resolved allowed native worker Stop may notify the leader through guarded delivery after the non-terminal task guard passes. Deprecated worker stall/progress environment knobs such as OMX_TEAM_PROGRESS_STALL_MS and OMX_TEAM_WORKER_TURN_STALL_MS are compatibility/test-only surfaces and must not be documented as active team-nudge tuning knobs. |
ask-user-question |
none | runtime-only | runtime-fallback | No distinct Codex native hook today |
PostToolUseFailure |
none | runtime-only | runtime-fallback | Fold into runtime/fallback handling until native support exists |
| non-Bash tool interception | PreToolUse / PostToolUse when provided by Codex |
native hook | native-partial | OMX stays no-op for unrelated non-Bash tools, but native subagent capacity failures and close-agent cleanup requests are handled when Codex provides those tool events |
| code simplifier stop follow-up | none | runtime-only | runtime-fallback | Cleanup follow-up stays on runtime/fallback surfaces, not native Stop |
SubagentStop |
none | runtime-only | not-supported-yet | OMC-specific lifecycle extension |
session-end |
none | session-end |
runtime-fallback | Still emitted from runtime/notify path, not native Codex hooks |
| wiki session capture | none | session-end |
runtime-fallback | Wiki session-log capture runs from the existing runtime session-end cleanup path, not from a native Codex hook |
session-idle |
none | session-idle |
runtime-fallback | Still emitted from runtime/notify path, not native Codex hooks |
The Main-root Conductor write guard blocks source, package, git, and substantive plan/spec/review edits from the leader while allowing workflow metadata writes. Trust for delegated performer lanes is scoped by guard:
- Planning boundary guards (
ralplan,deep-interview) exempt a delegated lane only when the event is a known typed role (catalog-bounded or an installed*.tomlrole) and trusted lane provenance exists. This keeps untypedcollaboration.spawn_agentchildren from writing source before an execution handoff/approval. - The Main-root Conductor / Ralph executing guard additionally trusts a delegated
lane on trusted provenance alone, regardless of role label, so native
collaboration.spawn_agentchildren and descendants can perform bounded writes during execution (#3116).
Native Codex events may provide that provenance either through
source.subagent.thread_spawn.parent_thread_id or through an existing
.omx/state/subagent-tracking.json entry whose thread_id is recorded as
kind:"subagent". The session leader thread is never trusted through either
path, so a bare typed role on the leader event — or provenance attached to the
leader thread — is not enough to bypass the guard.
The native hook adapter includes an agent-only document-refresh warning MVP for
spec-driven development hygiene. It does not install a generic CI gate, does
not add a repo-wide pre-commit framework, and must not hard-block git commit for document-refresh reasons. Existing Lore commit blocking remains
separate and still wins when the Lore commit guard is explicitly enabled and an
inline commit message is not Lore-compliant.
Lore commit enforcement is disabled by default. To require Lore-format inline
commit messages and the OmX co-author trailer while keeping OMX-managed native
hooks installed, set OMX_LORE_COMMIT_GUARD to 1, true, yes, or on.
For persistent Codex CLI usage, place the opt-in in config.toml:
[shell_environment_policy.set]
OMX_LORE_COMMIT_GUARD = "1"The opt-in controls only the Lore-style git commit blocking guard. Other
native PreToolUse checks, including document-refresh warnings and command
safety checks, still run. Native hook enforcement reads the same persistent
Codex config fallback when the hook process does not already have
OMX_LORE_COMMIT_GUARD in its environment. Inline command environment still
wins for that command, so OMX_LORE_COMMIT_GUARD=0 git commit ... disables a
persistent opt-in and env -u OMX_LORE_COMMIT_GUARD git commit ... removes the
persistent fallback for that invocation. omx doctor reports whether the guard
is enabled by explicit opt-in, disabled by default/config/environment, or
disabled because an explicit value is invalid.
Warning scope is intentionally narrow and rule-scoped:
- Commit path:
PreToolUseis Bash-only in this MVP and evaluates only inspectablegit commitcommands. It readsgit diff --cached --name-status, so only staged changes count. Staged product docs such asdocs/codex-native-hooks.mdcan suppress a native-hook rule warning. Rule-owned.omx/plans/**and.omx/specs/**targets suppress commit-path warnings only when they are tracked or force-staged despite.omx/being gitignored. Local-only ignored planning files do not suppress commit warnings. - Final handoff path:
Stopevaluates only terminal-looking final handoff attempts, after active-mode blockers and auto-nudge recovery. It reads staged plus unstaged diffs and can count fresh local rule-owned.omx/plans/**or.omx/specs/**files when their mtimes are newer than the mapped source change. This is an agent-local heuristic freshness check for final handoff, not commit evidence or proof of semantic refresh. - Mappings: rules live in
src/document-refresh/config.ts; unrelated doc or.omxedits do not suppress warnings for another rule. Initial rules cover native hook behavior, document-refresh enforcer behavior, CLI/operator behavior, and prompt-guidance behavior only. - Exclusions: tooling-only changes, release collateral, rename-only changes, and explicitly ignored non-user-facing internal tests are ignored conservatively. Ambiguous refactors should use the explicit exemption if no product/spec refresh is needed.
To acknowledge a legitimate no-refresh case, include this exact line in the commit message or final handoff text with a concrete reason:
Document-refresh: not-needed | <reason>
The warning output names the mapped triggering path(s) and expected refresh target group(s), so agents can refresh the right product docs or planning specs instead of using an unrelated docs edit as a blanket suppression.
The approved OMX-native wiki backport keeps lifecycle ownership intentionally narrow:
- Storage lives under repository
omx_wiki/, not ignored.omx/wiki/runtime state and not.omc/wiki/. - SessionStart may surface bounded wiki context from
omx_wiki/when the wiki already exists, but it should stay read-mostly and must not block the native hook path on expensive writes or index rebuilds. - SessionEnd remains a runtime/notify-path responsibility for best-effort, non-blocking session capture into
omx_wiki/. - PreCompact and PostCompact are native and no-stdout by default: they record the lifecycle seams without emitting advisory
additionalContextthat Codex rejects for compact hook events. - Routing should stay explicit: prefer
$wikior task verbs likewiki query/wiki add, and avoid implicit barewikinoun activation.
The approved explicit terminal stop model adds a canonical lifecycle layer for active workflow handoffs:
finishedblockedfaileduserinterludeaskuserQuestion
Hook readers should prefer explicit lifecycle metadata over assistant-text heuristics when those signals are available.
During migration, legacy blocked_on_user still suppresses continuation, but cancelled should be treated as internal legacy/admin compatibility rather than a canonical user-facing outcome.
For ralplan, native PreToolUse allows only a standalone terminal
omx state write transport for the current session's complete closeout
(active:false, current_phase:"complete"). The state backend remains the
authority for consensus validation and root/session terminalization, so compound
Bash commands that add any suffix after the closeout command stay blocked.
There is still no distinct native Codex ask-user-question hook today. That means askuserQuestion classification remains a runtime/fallback responsibility unless a future native hook surface exposes first-class question-stop metadata.
Stop/continuation readers must interpret approved combined workflow state from
the shared active-set contract rather than from a single legacy skill owner.
For the first-pass multi-state rollout, the approved overlaps are:
team + ralphteam + ultrawork
Unsupported overlaps should preserve the current state unchanged and direct the
operator to clear incompatible state explicitly via omx state ... or the
omx_state.* MCP tools before retrying. See
docs/contracts/multi-state-transition-contract.md.
UserPromptSubmit can now emit triage advisory context alongside keyword context. When no keyword matches, the triage layer classifies the prompt and may inject an advisory prompt-routing context string — this is advisory prompt-routing context that does not activate a skill or workflow by itself; it adds a developer-context hint the model may follow. Light advisory destinations include repo-local explore, narrow-edit executor, visual designer, and external documentation/reference researcher; researcher routing is for official-doc, version-compatibility, source-backed, or external lookup requests, does not override local anchors or implementation-shaped prompts, and still writes only prompt-routing state. Keywords remain the deterministic control surface: a matched keyword always takes precedence over triage output, and users can suppress triage injection per prompt with phrases such as no workflow, just chat, or plain answer.
Tracked native subagent UserPromptSubmit events are intentionally isolated from keyword activation and triage injection. The parent may delegate a child prompt that starts with text such as $ralplan Architect review step...; once the child native session is known in .omx/state/subagent-tracking.json, that prompt is handled as literal task text rather than as a fresh workflow invocation. Top-level prompt submits are unchanged and still activate workflows normally.
When .omx/ultragoal/goals.json exists, native UserPromptSubmit can apply bounded ultragoal steering only from explicit structured directives. The parser recognizes JSON objects after labels such as OMX_ULTRAGOAL_STEER:, omx.ultragoal.steer:, or omx ultragoal steer:. It does not infer mutations from ordinary prose.
Accepted and rejected proposals are delegated to src/ultragoal/artifacts.ts via steerUltragoal, so hook code does not own mutation semantics. The hook returns additional context that names .omx/ultragoal/goals.json, .omx/ultragoal/ledger.jsonl, the accepted/rejected/deduped status, and the invariant result. Steering context is additive with keyword, goal-warning, and triage context; keyword routing still takes precedence.
The steering invariants are the same as the CLI: no aggregate objective edits, no constraint edits, no hard delete, no auto-complete, no silent mutation, and no broad natural-language magic. Repeated prompt-submit directives dedupe by prompt signature or idempotency key so structural mutations are not duplicated.
When validating hooks, keep the proof boundary explicit:
- Native Codex hook proof
omx setupwrote.codex/hooks.json- native Codex event invoked
dist/scripts/codex-native-hook.js
- OMX plugin proof
- plugin dispatch/log evidence exists under
.omx/logs/hooks-*.jsonl
- plugin dispatch/log evidence exists under
- Fallback proof
- behavior came from notify-hook / derived watcher / tmux runtime, not native Codex hooks
Do not claim “native hooks work” when only tmux or synthetic notify fallback paths were exercised. Likewise, do not claim real execution readiness from hook/install evidence alone; validate an actual Codex execution in the active runtime profile when diagnosing auth or provider issues.