Codex handoff Skill | Agent Skills

Codex handoff

Pass a complete, self-contained task through stdin:

set -o pipefail
codex exec \
  --yolo \
  --cd "$workspace" \
  --strict-config \
  -c model_reasoning_effort=medium \
  --json \
  --color never \
  --output-last-message "$result" \
  - < "$prompt" \
  | tee "$events"

Parse $events as JSONL; read $result for the final response.
Capture .thread_id from the first event (thread.started) to resume the session later with codex exec resume <id>.
Keep every session in ~/.codex/sessions/<YYYY>/<MM>/<DD>/rollout-<timestamp>-<thread_id>.jsonl.
- Never override CODEX_HOME, use a temporary Codex home, or use --ephemeral for handoffs.
- Its turn_context events record the effective model and reasoning effort; the JSON event stream does not.
Add --output-schema <schema.json> when the caller requires a machine-validated response.
Keep -c model_reasoning_effort=medium; without it runs can default to none.
- Raise to high for hard tasks (deep reviews, tricky debugging).
Add --add-dir <dir>, --skip-git-repo-check, --image, or --model (e.g. --model gpt-5.6-sol) only when the task requires it.
Put the top-level --search before exec when live web search is required.
Recheck codex exec --help after CLI upgrades; the installed binary is authoritative.

Agent Skills: Codex handoff

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Codex handoff