codex-imagegen

codex-imagegen is a skill for Claude Code, Codex from luminary19/atelier. It costs 133 tokens per session (2,380 once invoked), scanned A, original, no licence file.

A skill for generating and editing raster images, such as photographs or other bitmap graphics, through the locally installed Codex command-line tool.

In plain words
What is it for?
Use it when asked to generate or edit an image through the Codex CLI.
Why use it?
It provides a way to create or change images using an existing authenticated Codex setup instead of an OpenAI API key.

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/luminary19/atelier/codex-imagegen
Any agent
npx skills add luminary19/atelier --skill codex-imagegen
Clone the repo
git clone --depth 1 https://github.com/luminary19/atelier

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-imagegen

README.md
[![agentmods](https://agentmods.dev/badge/skills/luminary19/atelier/codex-imagegen.svg)](https://agentmods.dev/skills/luminary19/atelier/codex-imagegen)
Your own site
<a href="https://agentmods.dev/skills/luminary19/atelier/codex-imagegen"><img src="https://agentmods.dev/badge/skills/luminary19/atelier/codex-imagegen.svg" alt="Measured on agentmods" height="20"></a>
Per session 133 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,380 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 $0.00133 $0.02380
Opus 5 $0.00067 $0.01190
Sonnet 5 $0.00027 $0.00476
Haiku 4.5 $0.00013 $0.00238

Measured 4d ago against content hash a2750f0dff2b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

codex-imagegen 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 4d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/codex-image.ps1), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/codex-imagegen/SKILL.md · 162 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

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 4d ago First seen · 162 lines · 133 tokens per session scan A a2750f0dff2b

Subscribe to this mod's changes

codex-imagegen is a skill published in the GitHub repository luminary19/atelier (2 stars, last pushed 2mo ago), with no licence file. It adds 133 tokens to every session and 2,380 once invoked, about $0.0007 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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