codex-imagegen

Installation
SKILL.md

Codex Imagegen

Generate images with Codex's built-in $imagegen skill and land them in the project, keeping ~/.codex/generated_images/ from silently growing (it accumulates ~10MB per generation and is never cleaned by Codex itself).

Everything is driven by one bundled script that survives plugin version bumps and works on machines without the codex plugin (it falls back to codex exec).

Prerequisites

Either of these (the script auto-detects which is present):

  • Codex plugin in Claude Code/plugin marketplace add openai/codex-plugin-cc, then /plugin install codex@openai-codex (Full guide: https://github.com/openai/codex-plugin-cc#install).
  • Codex CLI (any agent) — npm i -g @openai/codex, then codex login.

Auth is OpenAI/ChatGPT-account backed. Without one of these the script exits with code 3 and prints these install steps.

Installs
17
GitHub Stars
19
First Seen
Jul 8, 2026
codex-imagegen — nathanonn/agent-skills