OpenAI Image Generation

Use this skill to generate new images or edit existing images with OpenAI APIs using bundled shell tooling.

Commands

Run scripts by absolute path. Do not cd into the skill directory.

Generate a new image:

sh ~/.agents/skills/openai-image-generation/scripts/generate_image.sh
--prompt "A poster of a red panda astronaut"
--filename "2026-02-20-red-panda-astronaut.png"
--quality high
--size 1536x1024

Edit an existing image:

sh ~/.agents/skills/openai-image-generation/scripts/generate_image.sh
--prompt "Make this look like a watercolor painting"
--filename "2026-02-20-watercolor.png"
--input-image "./source.png"

Edit with mask (inpainting):

sh ~/.agents/skills/openai-image-generation/scripts/generate_image.sh
--prompt "Replace masked area with a neon sign"
--filename "2026-02-20-neon-edit.png"
--input-image "./source.png"
--mask "./mask.png"

Equivalent Bun wrapper:

bun ~/.agents/skills/openai-image-generation/scripts/generate_image.ts --prompt "..." --filename "..."

Always run from the user's working directory so relative output paths save where the user is working.

Options

Required:

• --prompt / -p : generation or editing prompt.

• --filename / -f : output image path.

Editing:

• --input-image / -i : source image file to edit.

• --mask / -m : optional PNG mask for inpainting.

Generation controls:

• --quality / -q : low|medium|high (default medium ).

• --size / -s : 1024x1024|1024x1536|1536x1024|auto (default 1024x1024 ).

• --background / -b : transparent|opaque|auto (default auto , generation only).

Common:

• --model : defaults to gpt-image-1 .

• --api-key / -k : overrides OPENAI_API_KEY .

API Key Resolution

Script checks:

• --api-key

• OPENAI_API_KEY

If neither is set, fail fast with an actionable error.

Output and Filenames

Default filename pattern:

• yyyy-mm-dd-hh-mm-ss-short-description.png

Examples:

• 2026-02-20-16-11-03-japanese-garden.png

• 2026-02-20-16-13-20-logo-mascot.png

Script prints the final saved path. Do not read the image file back unless user explicitly asks.

Script

• scripts/generate_image.sh : main implementation.

• scripts/generate_image.ts : Bun wrapper that forwards args to the shell script.