Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/leejuoh/claude-code-zero/codex-cancelnpx skills add LeeJuOh/claude-code-zero --skill codex-cancelgit clone --depth 1 https://github.com/LeeJuOh/claude-code-zeroWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00043 | $0.00474 |
| Opus 5 | $0.00022 | $0.00237 |
| Sonnet 5 | $0.00009 | $0.00095 |
| Haiku 4.5 | $0.00004 | $0.00047 |
Grade A, and why
codex-cancel scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Codex Job Cancel
Pass-through wrapper around the Official Codex companion's cancel subcommand. Exists so users who disabled the Official plugin's slash commands can still cancel jobs via codex-advisor.
Phase 1: Confirm target (if ambiguous)
If the user did not provide a job-id, the companion cancels the most recent active job — which may not be what they intended. Use AskUserQuestion when:
- Multiple active jobs exist (check via
node "$CODEX_COMPANION" statusfirst, optional). - The user's phrasing suggests a specific job ("cancel the rescue", "stop the research") but no ID.
Skip the prompt when the intent is obvious (single active job, or they pass an explicit ID).
Phase 2: Invoke companion cancel
set -o pipefail
CODEX_COMPANION=$("${CLAUDE_PLUGIN_ROOT}/scripts/resolve-companion.sh") \
|| { echo "Official Codex plugin not found — run /codex-setup" >&2; exit 1; }
node "$CODEX_COMPANION" cancel $ARGUMENTS
Relay the companion's output verbatim. It typically reports cancelled or no-op (not running).
Gotchas
- Cancellation is not instant. The companion signals the Codex worker; in-flight tool calls may complete before the worker exits. Don't promise "stopped immediately".
- Cancelling a rescue job does NOT revert the diff. If Codex already wrote files under
--write, those changes stay on disk. Remind the user togit diff/git restoreif needed. - No job-id == most recent active. Only one job at a time is the common case, so this usually does what the user wants — but with multiple active jobs it can surprise. When in doubt, run
statusfirst and cancel by explicit ID.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 38 lines · 43 tokens per session scan A 083cd72940f8
codex-cancel is a skill published in the GitHub repository LeeJuOh/claude-code-zero (51 stars, last pushed 2d ago), licensed MIT. It adds 43 tokens to every session and 474 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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