skill-lagz0ne-c3-skill-codex · by Install
$ agentstack add skill-lagz0ne-c3-skill-codex ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-lagz0ne-c3-skill-codex) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Codex — cross-model delegation
codex (OpenAI Codex CLI, model gpt-5.5, approval_policy = never so it never blocks on prompts) is a second coding agent that reads this repo and reasons over it precisely (verified). Consult it for a different model's perspective — it catches what a single model misses.
When to consult Codex
- A well-scoped implementation chunk you want a second model to write, or to cross-check
your own implementation against.
- An independent design/diff review — different model, different failure modes caught.
- Adversarial verification of a claim ("is X actually true in the shipped code?").
How — always non-interactive codex exec
| Goal | Command | |------|---------| | Analyze / review (read-only, safe — the default) | codex exec --sandbox read-only "" 2>/dev/null | | Let Codex EDIT files | codex exec --sandbox workspace-write "" 2>/dev/null | | Independent review of the working tree | codex review | | Apply Codex's last proposed diff | codex apply | | Cheaper/deeper | add -c model_reasoning_effort=low\|medium\|high\|xhigh | | Capture output | append -o out.txt, or --json for structured events | | Continue a session | codex exec resume --last "" |
Discipline (non-negotiable)
- Scope tightly + hand it concrete material — point Codex at exact
file:line, the
locked contract (tasks/v11-locked-contract.md), or the spec. It works best on concrete input, not vague asks.
2>/dev/nullto suppress thinking tokens unless you're debugging the run.- Verify every workspace-write run with the repo's own gates —
go -C cli build ./...,
go -C cli test ./..., c3local check. Codex's edits are a proposal, never ground truth; treat its diff like an untrusted PR.
- For high-stakes work, run it twice across models — have Codex and a Claude subagent
do the same task independently, then reconcile the diff. Cross-model disagreement is signal.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: lagz0ne
- Source: lagz0ne/c3-skill
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.