Skillshub nano-banana-pro

Generate or edit images via Gemini 3 Pro Image (Nano Banana Pro) with AI Gateway support.

install

source · Clone the upstream repo

git clone https://github.com/ComeOnOliver/skillshub

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/ComeOnOliver/skillshub "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/happycapy-ai/Happycapy-skills/nano-banana-pro" ~/.claude/skills/comeonoliver-skillshub-nano-banana-pro-76d2d5 && rm -rf "$T"

manifest: skills/happycapy-ai/Happycapy-skills/nano-banana-pro/SKILL.md

source content

Nano Banana Pro (Gemini 3 Pro Image)

Generate or edit images using Gemini 3 Pro Image via AI Gateway or direct API.

Quick Start

Generate an image:

python3 {baseDir}/scripts/generate_image.py \
  --prompt "your image description" \
  --filename "output.png" \
  --resolution 1K

Usage Examples

Generate Image

python3 {baseDir}/scripts/generate_image.py \
  --prompt "a cute cat sitting on a wooden floor" \
  --filename "cat.png"

Edit Image (requires GEMINI_API_KEY)

Note: Image editing currently requires direct Gemini API access.

export GEMINI_API_KEY="your-gemini-key"
python3 {baseDir}/scripts/generate_image.py \
  --prompt "make it more colorful" \
  --filename "cat-colorful.png" \
  -i "cat.png"

Multi-image Composition (up to 14 images, requires GEMINI_API_KEY)

python3 {baseDir}/scripts/generate_image.py \
  --prompt "combine these into one scene" \
  --filename "combined.png" \
  -i img1.png -i img2.png -i img3.png

API Key Configuration

The skill automatically detects API keys in this priority order:

AI_GATEWAY_API_KEY
(recommended) - Uses AI Gateway
GEMINI_API_KEY
- Direct Gemini API access
--api-key
argument - Manual key override

Recommended: AI Gateway (default)

export AI_GATEWAY_API_KEY="your-gateway-key"  # Usually pre-configured

✅ No additional dependencies required ✅ Cost-efficient and unified API management ❌ Image editing not currently supported

Alternative: Direct Gemini API

export GEMINI_API_KEY="your-gemini-key"

✅ Supports image editing and multi-image composition ❌ Requires

google-genai

package:

pip install google-genai

Options

```
--prompt, -p
```
: Image description (required)
```
--filename, -f
```
: Output filename (required)
```
--resolution, -r
```
: Resolution (
```
1K
```
,
```
2K
```
,
```
4K
```
, default:
```
1K
```
)
```
--input-image, -i
```
: Input image(s) for editing (up to 14, requires GEMINI_API_KEY)
```
--api-key, -k
```
: Manual API key override

Notes

Resolutions:
```
1K
```
(default),
```
2K
```
,
```
4K
```
Use descriptive filenames with timestamps:
```
2024-12-31-cat.png
```
The script outputs a
```
MEDIA:
```
line for OpenClaw integration
AI Gateway mode works with standard Python 3, no extra tools needed