Nanobanana Image Generation Skill

Generate or edit images using Google Gemini API through the nanobanana tool.

Requirements

1. GEMINI_API_KEY: Must be configured in ~/.nanobanana.env or export GEMINI_API_KEY=<your-api-key>
2. Python3 with depedent packages installed: google-genai, Pillow, python-dotenv. They could be installed via python3 -m pip install -r ${CLAUDE_PLUGIN_ROOT}/skills/nanobanana-skill/requirements.txt if not installed yet.
3. Executable: ${CLAUDE_PLUGIN_ROOT}/skills/nanobanana-skill/nanobanana.py

Instructions

For image generation

1. Ask the user for:
   • What they want to create (the prompt)
   • Desired aspect ratio/size (optional, defaults to 9:16 portrait)
   • Output filename (optional, auto-generates UUID if not specified)
   • Model preference (optional, defaults to gemini-3-pro-image-preview)