Codex plugin for Claude Code brings Codex into Claude Code so users can request code reviews or delegate tasks from that existing workflow. It is for Claude Code users with a ChatGPT subscription or OpenAI API key who want commands for reviews, handoffs, background jobs, and session management. The catalogue entries are the plugin's commands, skills, hooks, and agent.
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 openai/codex-plugin-cc/plugin install codexWrote 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/openai/codex-plugin-cc/codex-cli-runtime)<a href="https://agentmods.dev/skills/openai/codex-plugin-cc/codex-cli-runtime"><img src="https://agentmods.dev/badge/skills/openai/codex-plugin-cc/codex-cli-runtime/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/openai/codex-plugin-cc/codex-cli-runtime"><img src="https://agentmods.dev/badge/skills/openai/codex-plugin-cc/codex-cli-runtime.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
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 | $0.00019 | $0.00749 |
| Opus 5.5 | $0.00008 | $0.00300 |
| Sonnet 5.5 | $0.00004 | $0.00150 |
| Haiku 4.5 | $0.00002 | $0.00075 |
Grade A, and why
codex-cli-runtime scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
8 near-identical copies found in the catalogue:
- codex-cli-runtime — 100% identical, 2 lines differ
- codex-cli-runtime — 95% identical, 8 lines differ
- codex-cli-runtime — 94% identical, 4 lines differ
- codex-cli-runtime — 89% identical, 24 lines differ
- pi-cli-runtime — 89% identical, 29 lines differ
- copilot-cli-runtime — 88% identical, 24 lines differ
- gemini-cli-runtime — 84% identical, 33 lines differ
- gemini-cli-runtime — 84% identical, 28 lines differ
What it actually says
Codex Runtime
Use this skill only inside the codex:codex-rescue subagent.
Primary helper:
node "${CLAUDE_PLUGIN_ROOT}/scripts/codex-companion.mjs" task "<raw arguments>"
Execution rules:
- The rescue subagent is a forwarder, not an orchestrator. Its only job is to invoke
taskonce and return that stdout unchanged. - Prefer the helper over hand-rolled
git, direct Codex CLI strings, or any other Bash activity. - Do not call
setup,review,adversarial-review,status,result, orcancelfromcodex:codex-rescue. - Use
taskfor every rescue request, including diagnosis, planning, research, and explicit fix requests. - You may use the
gpt-5-4-promptingskill to rewrite the user's request into a tighter Codex prompt before the singletaskcall. - That prompt drafting is the only Claude-side work allowed. Do not inspect the repo, solve the task yourself, or add independent analysis outside the forwarded prompt text.
- Leave
--effortunset unless the user explicitly requests a specific effort. - Leave model unset by default. Add
--modelonly when the user explicitly asks for one. - Map
sparkto--model gpt-5.3-codex-spark. - Default to a write-capable Codex run by adding
--writeunless the user explicitly asks for read-only behavior or only wants review, diagnosis, or research without edits.
Command selection:
- Use exactly one
taskinvocation per rescue handoff. - If the forwarded request includes
--backgroundor--wait, treat that as Claude-side execution control only. Strip it before callingtask, and do not treat it as part of the natural-language task text. - If the forwarded request includes
--model, normalizesparktogpt-5.3-codex-sparkand pass it through totask. - If the forwarded request includes
--effort, pass it through totask. - If the forwarded request includes
--resume, strip that token from the task text and add--resume-last. - If the forwarded request includes
--fresh, strip that token from the task text and do not add--resume-last. --resume: always usetask --resume-last, even if the request text is ambiguous.--fresh: always use a freshtaskrun, even if the request sounds like a follow-up.--effort: accepted values arenone,minimal,low,medium,high,xhigh.task --resume-last: internal helper for "keep going", "resume", "apply the top fix", or "dig deeper" after a previous rescue run.
Safety rules:
- Default to write-capable Codex work in
codex:codex-rescueunless the user explicitly asks for read-only behavior. - Preserve the user's task text as-is apart from stripping routing flags.
- Do not inspect the repository, read files, grep, monitor progress, poll status, fetch results, cancel jobs, summarize output, or do any follow-up work of your own.
- Return the stdout of the
taskcommand exactly as-is. - If the Bash call fails or Codex cannot be invoked, return nothing.
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.
- 1mo ago First seen · 44 lines · 19 tokens per session scan A cce11c3bd6d7
codex-cli-runtime is a skill published in the GitHub repository openai/codex-plugin-cc (34,354 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 19 tokens to every session and 749 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.
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