codex

codex is a skill for Claude Code, Codex from cacr92/WeReply. It costs 42 tokens per session (2,737 once invoked), scanned A, original, MIT.

A command-line tool for sending code analysis, refactoring, and code-change tasks to Codex AI. It can include files by reference and return structured results.

In plain words
What is it for?
Use it to review code, refactor several files, generate code, run tests, and apply automated changes through Codex CLI.
Why use it?
It helps handle complex changes across files without manually describing every file or parsing free-form responses. It also provides sandbox controls for safer automated work.

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/cacr92/wereply/codex
Any agent
npx skills add cacr92/WeReply --skill codex
Clone the repo
git clone --depth 1 https://github.com/cacr92/WeReply

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for codex

README.md
[![agentmods](https://agentmods.dev/badge/skills/cacr92/wereply/codex.svg)](https://agentmods.dev/skills/cacr92/wereply/codex)
Your own site
<a href="https://agentmods.dev/skills/cacr92/wereply/codex"><img src="https://agentmods.dev/badge/skills/cacr92/wereply/codex.svg" alt="Measured on agentmods" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,737 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00042 $0.02737
Opus 5 $0.00021 $0.01368
Sonnet 5 $0.00008 $0.00547
Haiku 4.5 $0.00004 $0.00274

Measured 3d ago against content hash e027f80aee75, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 3d 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.

.trae/skills/codex/SKILL.md · 334 lines

How it starts

The opening of the file, as written. The whole thing — 334 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Codex CLI Integration

Overview

Execute Codex CLI commands and parse structured JSON responses. Supports file references via @ syntax, multiple models, and sandbox controls.

When to Use

  • Complex code analysis requiring deep understanding
  • Large-scale refactoring across multiple files
  • Automated code generation with safety controls

Fallback Policy

Codex is the primary execution method for all code edits and tests. Direct execution is only permitted when:

  1. Codex is unavailable (service down, network issues)
  2. Codex fails twice consecutively on the same task

When falling back to direct execution:

  • Log CODEX_FALLBACK with the reason
  • Retry Codex on the next task (don't permanently switch)
  • Document the fallback in the final summary

Usage

Mandatory: Run every automated invocation through the Bash tool in the foreground with HEREDOC syntax to avoid shell quoting issues, keeping the timeout parameter fixed at 7200000 milliseconds (do not change it or use any other entry point).

codex-wrapper - [working_dir] <<'EOF'
<task content here>
EOF

Why HEREDOC? Tasks often contain code blocks, nested quotes, shell metacharacters ($, `, \), and multiline text. HEREDOC (Here Document) syntax passes these safely without shell interpretation, eliminating quote-escaping nightmares.

Foreground only (no background/BashOutput): Never set background: true, never accept Claude's "Running in the background" mode, and avoid BashOutput streaming loops. Keep a single foreground Bash call per Codex task; if work might be long, split it into smaller foreground runs instead of offloading to background execution.

Simple tasks (backward compatibility): For simple single-line tasks without special characters, you can still use direct quoting:

codex-wrapper "simple task here" [working_dir]

Resume a session with HEREDOC:

codex-wrapper resume <session_id> - [working_dir] <<'EOF'
<task content>
EOF

Read the full file on GitHub · 334 lines

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. 3d ago First seen · 334 lines · 42 tokens per session scan A e027f80aee75

Subscribe to this mod's changes

codex is a skill published in the GitHub repository cacr92/WeReply (6 stars, last pushed 7mo ago), licensed MIT. It adds 42 tokens to every session and 2,737 once invoked, about $0.0002 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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