Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add LeeJuOh/claude-code-zero/plugin install codex-advisorWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/leejuoh/claude-code-zero/codex-cancel)<a href="https://agentmods.dev/skills/leejuoh/claude-code-zero/codex-cancel"><img src="https://agentmods.dev/badge/skills/leejuoh/claude-code-zero/codex-cancel/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/leejuoh/claude-code-zero/codex-cancel"><img src="https://agentmods.dev/badge/skills/leejuoh/claude-code-zero/codex-cancel.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What 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 5.1 | $0.00013 | $0.00294 |
| Opus 5.5 | $0.00005 | $0.00118 |
| Sonnet 5.5 | $0.00003 | $0.00059 |
| Haiku 4.5 | $0.00001 | $0.00029 |
Grade A, and why
codex-cancel scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Codex Job Cancel
Pass-through wrapper around the Official Codex companion's cancel subcommand. Exists so users who disabled the Official plugin's slash commands can still cancel jobs via codex-advisor.
Invoke companion cancel
Arguments: pass on only a job id (like task-mf3k2a-x7q1zp, or a unique start of one), quoted. If the user asked in words ("stop the running job"), run with no arguments. The script refuses anything else, because the companion reads a stray word as a job id and fails with No job found.
"${CLAUDE_PLUGIN_ROOT}/scripts/codex-job.sh" cancel <filtered arguments>
Relay the companion's output verbatim.
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.
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.
- 9d ago Changed · -11 lines · -30 tokens per session bdb3267cbbe4
- 1mo 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 (52 stars, last pushed 3d ago), licensed MIT. It adds 13 tokens to every session and 294 once invoked, about $0.0001 per session on Opus 5.5. 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.
Other skills, from other repositories
dcf-model
Build discounted cash flow valuation workbooks in Excel.
mle-workflow
Production machine-learning engineering workflow for data contracts, reproducible training, model evaluation, deployment, monitoring, and rollback. Use when building, reviewing, or hardening ML systems beyond one-off notebooks.
autonomous-loops
Patterns and architectures for autonomous Claude Code loops — from simple sequential pipelines to RFC-driven multi-agent DAG systems.
ascii-video
ASCII video: convert video/audio to colored ASCII MP4/GIF.
grounded-citations
Ground answers and documents in cited, verifiable sources.
hermes-agent-skill-authoring
Author in-repo SKILL.md files: frontmatter and structure.