nanobanana-skill

1# Nanobanana Image Generation Skill
2 
3Generate or edit images using Google Gemini API through the nanobanana tool.
4 
5## Requirements
6 
71. **GEMINI_API_KEY**: Must be configured in `~/.nanobanana.env` or `export GEMINI_API_KEY=<your-api-key>`
82. **Python3 with dependent packages installed**: google-genai, Pillow, python-dotenv. They could be installed via `python3 -m pip install -r ${CLAUDE_SKILL_DIR}/requirements.txt` if not installed yet.
93. **Executable**: `${CLAUDE_SKILL_DIR}/nanobanana.py`
10 
11## Instructions
12 
13### For image generation
14 
151. Ask the user for:
16   - What they want to create (the prompt)
17   - Desired aspect ratio/size (optional, defaults to 9:16 portrait)
18   - Output filename (optional, auto-generates UUID if not specified)
19   - Model preference (optional, defaults to gemini-nano-banana-2.1)
20   - Resolution (optional, defaults to 1K)
21 
222. Run the nanobanana script with appropriate parameters:
23 
24   ```bash
25   python3 ${CLAUDE_SKILL_DIR}/nanobanana.py --prompt "description of image" --output "filename.png"
26   ```
27 
283. Show the user the saved image path when complete
29 
30### For image editing
31 
321. Ask the user for:
33   - Input image file(s) to edit
34   - What changes they want (the prompt)
35   - Output filename (optional)
36 
372. Run with input images:
38 
39   ```bash
40   python3 ${CLAUDE_SKILL_DIR}/nanobanana.py --prompt "editing instructions" --input image1.png image2.png --output "edited.png"
41   ```
42 
43## Available Options
44 
45### Aspect Ratios (--size)
46 
47- `1024x1024` (1:1) - Square
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