ask-codex

A skill for asking the Codex command-line tool for a second opinion on a question, code review, or design choice.

In plain words
What is it for?
Cross-checking answers, reviewing code, comparing design decisions, and sanity-checking plans.
Why use it?
It gives you another model's view when you want to check an idea or spot problems before proceeding.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/zackbart/agent-plugins/ask-codex
Any agent
npx skills add zackbart/agent-plugins --skill ask-codex
Clone the repo
git clone --depth 1 https://github.com/zackbart/agent-plugins

Made for: Claude Code, Codex.

Per session 137 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,826 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00137 $0.01826
Opus 5 $0.00068 $0.00913
Sonnet 5 $0.00027 $0.00365
Haiku 4.5 $0.00014 $0.00183

Measured yesterday against content hash a49bfb613f45, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

ask-codex scanned grade B with 1 finding 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 yesterday.

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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

~/.codex/config.toml for model and reasoning settings.
plugins/motif/skills/ask-codex/SKILL.md · 114 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

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.

  1. yesterday First seen · 114 lines · 137 tokens per session scan B a49bfb613f45

Subscribe to this mod's changes

ask-codex is a skill published in the GitHub repository zackbart/agent-plugins (3 stars, last pushed 2mo ago), with no licence file. It adds 137 tokens to every session and 1,826 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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