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/agentic-box/owlex/codexnpx skills add agentic-box/owlex --skill codexgit clone --depth 1 https://github.com/agentic-box/owlexWhat 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 | $0.00017 | $0.00227 |
| Opus 5 | $0.00009 | $0.00113 |
| Sonnet 5 | $0.00003 | $0.00045 |
| Haiku 4.5 | $0.00002 | $0.00023 |
Grade A, and why
codex 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 Session
Start a Codex CLI session for deep reasoning, code review, and analysis.
Instructions
- Take the user's prompt from: $ARGUMENTS
- If no argument provided, ask what they want Codex to help with
- Determine if new or continuation:
- New topic: Use
start_codex_session - Follow-up: Use
resume_codex_session
- New topic: Use
- Return immediately with the task_id
- Tell the user:
- "Codex started (task: <task_id>)"
- "Check results with:
/codex-result <task_id>"
Do NOT call wait_for_task. Return immediately.
Usage
/codex Explain how the auth flow works/codex Find bugs in this function
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 · 32 lines · 17 tokens per session scan A ca2b6a532718
codex is a skill published in the GitHub repository agentic-box/owlex (139 stars, last pushed 5mo ago), licensed MIT. It adds 17 tokens to every session and 227 once invoked, about $0.0001 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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