aiwg-regenerate-codex

aiwg-regenerate-codex is a skill for Codex from jmagly/aiwg. It costs 31 tokens per session (1,024 once invoked), scanned A, original, MIT.

A project command that rebuilds CODEX.md or the user-wide Codex instructions file with AIWG framework context while preserving team-written content. Unlike some other tools, Codex receives the context directly in the instruction file.

In plain words
What is it for?
Use it to refresh Codex context, update instructions for one project or all projects, preview changes, or migrate the context arrangement.
Why use it?
It keeps Codex's project or user instructions up to date without losing existing guidance. It also supports backups, previews, and choosing project-level or user-level instructions.

Skill for Codex

Written for Codex: reads ~/.codex or $CODEX_HOME. Also seen: mentions Codex.

Good fit Use it to refresh Codex context, update instructions for one project or all projects, preview changes, or migrate the context arrangement.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jmagly/aiwg/aiwg-regenerate-codex
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.

Any agent
npx skills add jmagly/aiwg --skill aiwg-regenerate-codex
Clone the repo
git clone --depth 1 https://github.com/jmagly/aiwg

Made for: 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 aiwg-regenerate-codex

README.md
[![agentmods](https://agentmods.dev/badge/skills/jmagly/aiwg/aiwg-regenerate-codex/github.svg)](https://agentmods.dev/skills/jmagly/aiwg/aiwg-regenerate-codex)
Your own site
<a href="https://agentmods.dev/skills/jmagly/aiwg/aiwg-regenerate-codex"><img src="https://agentmods.dev/badge/skills/jmagly/aiwg/aiwg-regenerate-codex/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for aiwg-regenerate-codex

Your own site · 80×15
<a href="https://agentmods.dev/skills/jmagly/aiwg/aiwg-regenerate-codex"><img src="https://agentmods.dev/badge/skills/jmagly/aiwg/aiwg-regenerate-codex.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,024 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Prompt Injection · line 28
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
How audits are shown
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 5.1 $0.00031 $0.01024
Opus 5 $0.00015 $0.00512
Sonnet 5 $0.00006 $0.00205
Haiku 4.5 $0.00003 $0.00102

Measured 9d ago against content hash efec5eaeb0c3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

aiwg-regenerate-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 9d 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.

agentic/code/addons/aiwg-utils/skills/aiwg-regenerate-codex/SKILL.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Regenerate Codex Context

Regenerate the Codex context file (CODEX.md or ~/.codex/instructions.md) for OpenAI Codex integration. Performs an intelligent merge — preserving team-written content while updating AIWG context.

Core Principle

Team content is preserved. AIWG content is updated. Full injection used (Codex does not support @-link directives).

Codex context files do not support @filename style includes. AIWG content is embedded directly using injection markers:

<!-- BEGIN AIWG -->
[AIWG content]
<!-- END AIWG -->

This is different from other providers that use the hook file approach.

Parameters

Flag Description
--no-backup Skip creating backup file
--dry-run Preview changes without writing
--user-level Update ~/.codex/instructions.md instead of project-level CODEX.md
--migrate Extract injection to AIWG-codex.md and reference from CODEX.md (future-proofing)

Context File Locations

Scope Path Use case
Project-level CODEX.md Project-specific AIWG context
User-level ~/.codex/instructions.md User-wide context across all projects

Default: project-level CODEX.md. Use --user-level for user-wide context.

Execution Steps

Step 1: Create Backup

Unless --no-backup specified, create CODEX.md.backup-{YYYYMMDD-HHMMSS}.

Step 2: Analyze Existing Content

Read CODEX.md if it exists and categorize:

  • Team content (PRESERVE): Project rules, conventions, business logic, above or below AIWG block
  • AIWG content (UPDATE): Content between <!-- BEGIN AIWG --> and <!-- END AIWG -->

Step 3: Generate AIWG Content

Generate AIWG content from installed framework manifests. Same content as other providers' hook files, but embedded inline.

Also write AIWG-codex.md as a side file for reference and for potential future migration if Codex adds @-link support.

Read the full file on GitHub · 136 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. 9d ago First seen · 136 lines · 31 tokens per session scan A efec5eaeb0c3

Subscribe to this mod's changes

aiwg-regenerate-codex is a skill published in the GitHub repository jmagly/aiwg (211 stars, last pushed yesterday), licensed MIT. It adds 31 tokens to every session and 1,024 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 2026-09-03.