Nano Banana Image Generation
Description
Generate professional images via the Gemini CLI's nanobanana extension.
Installation
This entry records only its repository, not the path inside it, so there is no
exact command to give. Open the source below and copy the folder into
~/.claude/skills/, or the file into ~/.claude/agents/.
README
name: nano-banana description: REQUIRED for all image generation requests. Generate and edit images using Nano Banana (Gemini CLI). Handles blog featured images, YouTube thumbnails, icons, diagrams, patterns, illustrations, photos, visual assets, graphics, artwork, pictures. Use this skill whenever the user asks to create, generate, make, draw, design, or edit any image or visual content. allowed-tools: Bash(gemini:*)
Nano Banana Image Generation
Generate professional images via the Gemini CLI's nanobanana extension.
When to Use This Skill
ALWAYS use this skill when the user:
- Asks for any image, graphic, illustration, or visual
- Wants a thumbnail, featured image, or banner
- Requests icons, diagrams, or patterns
- Asks to edit, modify, or restore a photo
- Uses words like: generate, create, make, draw, design, visualize
Do NOT attempt to generate images through any other method.
Before First Use
- Verify extension is installed:
gemini extensions list | grep nanobanana - If missing, install it:
gemini extensions install https://github.com/gemini-cli-extensions/nanobanana - Verify API key is set:
[ -n "$GEMINI_API_KEY" ] && echo "API key configured" || echo "Missing GEMINI_API_KEY"
Command Selection
| User Request | Command |
|---|---|
| "make me a blog header" | /generate |
| "create an app icon" | /icon |
| "draw a flowchart of..." | /diagram |
| "fix this old photo" | /restore |
| "remove the background" | /edit |
| "create a repeating texture" | /pattern |
| "make a comic strip" | /story |
Available Commands
**Note:** Always use the `--yolo` flag to automatically approve all tool actions.
| Command | Use Case |
|---|---|
gemini --yolo "/generate 'prompt'" |
Text-to-image generation |
gemini --yolo "/edit file.png 'instruction'" |
Modify existing image |
gemini --yolo "/restore old_photo.jpg 'fix scratches'" |
Repair damaged photos |
gemini --yolo "/icon 'description'" |
App icons, favicons, UI elements |
gemini --yolo "/diagram 'description'" |
Flowcharts, architecture diagrams |
gemini --yolo "/pattern 'description'" |
Seamless textures and patterns |
gemini --yolo "/story 'description'" |
Sequential/narrative images |
gemini --yolo "/nanobanana prompt" |
Natural language interface |
Common Options
--yolo- Required. Auto-approve all tool actions (no confirmation prompts)--count=N- Generate N variations (1-8)--preview- Auto-open generated images--styles="style1,style2"- Apply artistic styles--format=grid|separate- Output arrangement
Common Sizes
| Use Case | Dimensions | Notes |
|---|---|---|
| YouTube thumbnail | 1280x720 | --aspect=16:9 |
| Blog featured image | 1200x630 | Social preview friendly |
| Square social | 1080x1080 | Instagram, LinkedIn |
| Twitter/X header | 1500x500 | Wide banner |
| Vertic |
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