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/valpere/chorus/codexnpx skills add valpere/chorus --skill codexgit clone --depth 1 https://github.com/valpere/chorusWhat 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 | $0.00061 | $0.00226 |
| Opus 5 | $0.00030 | $0.00113 |
| Sonnet 5 | $0.00012 | $0.00045 |
| Haiku 4.5 | $0.00006 | $0.00023 |
Grade A, and why
chorus-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
Chorus: Delegate to Codex
This skill delegates tasks to Codex for a second opinion or alternative analysis.
When to use
- User explicitly asks to delegate to Codex
- User wants a second opinion from Codex
- User wants to compare Codex's answer with Gemini's
- User asks "what would Codex say?" or similar
Invocation
Run Codex non-interactively with the task:
codex exec "<task>"
The exec command executes the task in non-interactive mode.
Output handling
Return Codex's output verbatim — no paraphrasing, no summaries, no added commentary.
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 · 34 lines · 61 tokens per session scan A e1cb34ac9522
chorus-codex is a skill published in the GitHub repository valpere/chorus (10 stars, last pushed 3mo ago), licensed MIT. It adds 61 tokens to every session and 226 once invoked, about $0.0003 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 2026-08-31.
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