codex

A way to hand coding work to the OpenAI Codex command-line agent. It is intended for repositories managed with Git and requires the Codex CLI.

In plain words
What is it for?
Use it for building features, refactoring code, reviewing pull requests, and fixing groups of issues.
Why use it?
It lets another coding agent handle well-defined repository work while keeping the task tied to the project’s files and history.

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

Made for: Claude Code, Codex.

Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,104 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00040 $0.01104
Opus 5 $0.00020 $0.00552
Sonnet 5 $0.00008 $0.00221
Haiku 4.5 $0.00004 $0.00110

Measured 2d ago against content hash 72f849d28274, 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 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.

skills/autonomous-ai-agents/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. 2d ago First seen · 114 lines · 40 tokens per session scan A 72f849d28274

Subscribe to this mod's changes

codex is a skill published in the GitHub repository raphaelmansuy/edgecrab (84 stars, last pushed 1mo ago), with no licence file. It adds 40 tokens to every session and 1,104 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 2026-08-30.

Related

Other skills, from other repositories

survey-methodology

Plan-time methodology contract for survey/review/report projects. Forces an audit-grade survey instead of a paper-trust summary. Distilled from 240 reviews (2024-2026) across 9 domain clusters — physics/RMP/Living Reviews, chemistry/materials, biology/medicine narrative + Cochrane SRs, CS/ML/AI, math/Acta Numerica…

Muuuun/luxas · 161 tokens

review

Write domain-authentic review articles that synthesize rather than stack. Covers 10 scientific domains (physics, chemistry, biology, medicine, mathematics, computerscience, earthenvironment, astronomy, economics, materials) with per-domain style guides mined from landmark reviews in RMP / Nat. Rev. X / Annu. Rev. /…

Muuuun/luxas · 97 tokens

search

Unified academic paper search, citation chains, paper download (arXiv LaTeX/PDF, Sci-Hub), figure extraction from papers, LaTeX source reading, BibTeX fetching, web search, and browser automation for Cloudflare-protected sites (PRL, Science, Nature, Google Scholar).

Muuuun/luxas · 65 tokens

qec-construct

Verifier-in-the-loop CONSTRUCTION of quantum error-correcting codes with transversal non-Clifford gates (CCZ/T). Applies whenever the project goal is a new or better code/construction — INCLUDING search-phrased goals ("find codes beating X"), where the construct-loop (propose algebraic rule → qverify → debug) is the…

Muuuun/luxas · 148 tokens

venue-specific

Venue-specific formatting requirements for academic journals and conferences across all disciplines. Covers Nature, Science, Cell, PRL, NEJM, Lancet, JACS, NeurIPS, ICML, and 30+ top venues. Use when writing, formatting, or checking a paper for a specific target venue.

Muuuun/luxas · 65 tokens

figure

Hybrid figure pipeline (Nano Banana raster + rembg background removal + TikZ vector assembly). Includes a TikZ template library covering quantum circuits (quantikz), Feynman diagrams (tikz-feynman), circuits (circuitikz), molecules (chemfig), 2D/3D plots (pgfplots), energy-level diagrams, phase-space trajectories…

Muuuun/luxas · 104 tokens