Claude Codex

Delegate work from Claude Code to the local codex CLI. This skill assumes Codex is already authenticated on this machine. It does not mint, extract, or transfer credentials.

Usage: /claude-codex [prompt]

ARGUMENTS: $ARGUMENTS

When to Use

• "Ask Codex to review this change"
• "Use my Codex subscription from Claude Code"
• Need a second model to inspect a bug, review a diff, or propose an implementation
• Need a Codex result saved or streamed from the current repo
• Spec-driven one-shot build of a self-contained artifact (HTML/CSS/JS prototype, single-file demo) — use --goal to invoke Codex's /goal mode

When NOT to Use

• Interactive review from this Claude Code session → use /codex:review, /codex:adversarial-review, or /codex:rescue from the openai/codex-plugin-cc plugin. They're the discoverable, versioned path.
• Anything that needs a Codex session ID / job tracking / status polling → plugin's /codex:status is the right surface.

If you don't see /codex:* slash-commands available, install the plugin in this Claude Code session:

/plugin marketplace add openai/codex-plugin-cc
/plugin install codex@openai-codex
/reload-plugins
/codex:setup

This skill stays as the non-interactive bash-wrapper path — invoked by discord-bridge.py's team-tier ===SUTANDO SYSTEM INSTRUCTIONS=== block (codex exec --sandbox read-only on Discord tasks from non-owner senders), cron-fired jobs that need a one-shot codex call, and similar file-bridge workflows where a plugin slash-command can't reach.

Guardrails

• Prefer codex review --uncommitted for code review.
• Prefer codex exec for analysis, planning, or implementation prompts.
• Keep Codex pointed at the same repo with -C "$PWD" unless the user asked for another directory.
• Default to workspace-write sandbox or stricter. Do not use bypass flags unless the user explicitly asks.

Quick Checks

codex login status
bash "$SKILL_DIR/scripts/codex-run.sh" --check

Common Commands

# General delegation
bash "$SKILL_DIR/scripts/codex-run.sh" -- "Inspect src/task-bridge.ts for race conditions"

# Safer review of current uncommitted changes
bash "$SKILL_DIR/scripts/codex-run.sh" --review --uncommitted -- "Prioritize bugs and missing tests"

# Review against a base branch
bash "$SKILL_DIR/scripts/codex-run.sh" --review --base main -- "Focus on regressions and security"

# Save the last Codex message to a file
bash "$SKILL_DIR/scripts/codex-run.sh" --output-last-message results/codex-review.txt -- "Review the current workspace"

# Spec-driven one-shot build (Codex /goal mode)
bash "$SKILL_DIR/scripts/codex-run.sh" --goal -- "$(cat path/to/spec.md)"

PR review — scripts/review-pr.sh <N> (read-only, bounded)

The safe, read-only way to get a Codex review of a GitHub PR. Fetches the diff with gh pr diff <N> (READ-ONLY — no checkout, never mutates git state or fails on a dirty tree), inlines it into codex exec --sandbox read-only, and wraps the whole thing in codex-bounded.sh so a slow/wedged review can't grind unbounded.

bash "$SKILL_DIR/scripts/review-pr.sh" 1754            # default --max 240 --stall 60
bash "$SKILL_DIR/scripts/review-pr.sh" 1754 --max 300  # longer cap for a big diff

Prints VERDICT-MARKER: <token> as stdout line 1, then Codex's verdict preceded by that token. The token is a per-RUN nonce, never shown to Codex, so a diff or verdict quoting a marker literal cannot pose as it. The verdict is only the text after the LAST such line, which holds the mechanical checks as well as Codex's verdict — so a consumer taking the tail truncates the checks. The rest of the stream is Codex's exec trace, left unredirected on purpose so codex-bounded.sh --stall can watch it — it contains repository source the agent inlined while working, so a consumer that takes the whole stream (or its tail) quotes that source as the PR's own content. Extract after the last marker. Exit 0 = verdict produced; 124 = hit the --max cap; 125 = stalled (no output for --stall s); other non-zero = gh/codex error.

Timing: codex exec is agentic — even with the diff inlined it may explore related code, so a real review often takes 100s+ (147s observed on #1754). Keep --max ≥180; do NOT drop it near 120 or you'll kill legitimate reviews. This is the path the team-tier ===SUTANDO SYSTEM INSTRUCTIONS=== block runs to auto-review a non-owner PR-review request (owner-ping only on failure).

Bounded runner — scripts/codex-bounded.sh

Generic stall-watchdog + wall-clock cap for any (sandboxed) delegation. --stall N kills the process tree after N seconds of total output SILENCE (the "never going to finish" signal — a healthy codex streams as it works); --max M is the absolute backstop (--max 0 disables it, stall-only). Exit 125 = stalled, 124 = max cap. Used by review-pr.sh and by the discord-bridge team/other-tier codex exec delegation so a sandboxed run can't grind forever.

bash "$SKILL_DIR/scripts/codex-bounded.sh" --stall 90 --max 240 -- <command...> < /dev/null

/goal mode (--goal)

Wraps Codex's interactive /goal slash-command for non-interactive use. The flag prepends /goal to the prompt and forces --full-auto so Codex can write files unattended.

Reach for it when:

• The task is a self-contained artifact (single HTML file, one-off demo, isolated script).
• You have a tight written spec and want a one-shot build with a known cost ceiling.
• A second-model take on a prototype is useful (run --goal in parallel with Claude's own build for cross-check).

Skip it when:

• The task touches in-repo code or needs memory/context Claude already has.
• You expect to iterate — /goal is one-shot and does not self-correct on failure.

If Invoked As A Slash Command

• If ARGUMENTS is empty, explain the available modes and suggest --review --uncommitted for diffs or a plain prompt for general delegation.
• If ARGUMENTS starts with --goal (e.g., /claude-codex --goal Build a self-playing demo), strip the prefix and route the remaining text through --goal mode:

PROMPT="${ARGUMENTS#--goal }"
bash "$SKILL_DIR/scripts/codex-run.sh" --goal -- "$PROMPT"

• Otherwise (plain prompt), run:

bash "$SKILL_DIR/scripts/codex-run.sh" -- "$ARGUMENTS"