Generate or edit images via Gemini Image Model (Nano Banana 2 & Nano Banana Pro).
Use the bundled script to generate or edit images.
| Friendly Name | Model ID | Notes |
|---|---|---|
| Nano Banana 2 | gemini-3.1-flash-image-preview | Default |
| Nano Banana Pro | gemini-3-pro-image-preview |
Generate
uv run {baseDir}/scripts/generate_image.py --prompt "your image description" --filename "output.png" --resolution 1K
Generate with a specific model
uv run {baseDir}/scripts/generate_image.py --prompt "your image description" --filename "output.png" --model gemini-3-pro-image-preview
Edit (single image)
uv run {baseDir}/scripts/generate_image.py --prompt "edit instructions" --filename "output.png" -i "/path/in.png" --resolution 2K
Multi-image composition (up to 14 images)
uv run {baseDir}/scripts/generate_image.py --prompt "combine these into one scene" --filename "output.png" -i img1.png -i img2.png -i img3.png
API key
GEMINI_API_KEY env varskills."nano-banana-pro".apiKey / skills."nano-banana-pro".env.GEMINI_API_KEY in ~/.openclaw/openclaw.jsonNotes
1K (default), 2K, 4K.gemini-3.1-flash-image-preview (Nano Banana 2). Pass --model gemini-3-pro-image-preview for Nano Banana Pro.yyyy-mm-dd-hh-mm-ss-name.png.MEDIA: line for OpenClaw to auto-attach on supported chat providers.