codex-imagegen - Generate and Edit Images via Codex CLI Imagegen
Generates or edits images (icons, banners, illustrations, OG images) in PNG/JPEG/WebP format using the Codex CLI built-in $imagegen skill with gpt-image-2.
Tags
Updated: 2026-06-30Capabilities
Typical Inputs
Typical Outputs
What this skill does
- generate image generation prompts
- run codex exec non-interactively
- move and resize output images
- parse codex stdout for paths
- edit existing images
- generate batch image sets
Inputs
- Image generation prompt
- Output file path
- Source image file
- Output dimensions
Outputs
- Image files in PNG/JPEG/WebP format
- Resized image files
- Absolute paths of generated images
Requirements
- Codex CLI v0.130+ installed and authenticated
- macOS sips or Linux ImageMagick for image resizing
- Bash tool timeout of at least 300000 ms
- OPENAI_API_KEY for batch API billing (optional)