# Nano Banana Pro

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

- **Type:** Skill
- **Install:** `agentstack add skill-happycapy-ai-happycapy-skills-nano-banana-pro`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [happycapy-ai](https://agentstack.voostack.com/s/happycapy-ai)
- **Installs:** 0
- **Category:** [Content & Media](https://agentstack.voostack.com/c/content-and-media)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [happycapy-ai](https://github.com/happycapy-ai)
- **Source:** https://github.com/happycapy-ai/Happycapy-skills/tree/main/skills/nano-banana-pro

## Install

```sh
agentstack add skill-happycapy-ai-happycapy-skills-nano-banana-pro
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# 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:

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

## Usage Examples

### Generate Image

```bash
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.

```bash
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)

```bash
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:

1. **`AI_GATEWAY_API_KEY`** (recommended) - Uses AI Gateway
2. **`GEMINI_API_KEY`** - Direct Gemini API access
3. **`--api-key` argument** - Manual key override

### Recommended: AI Gateway (default)

```bash
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

```bash
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

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [happycapy-ai](https://github.com/happycapy-ai)
- **Source:** [happycapy-ai/Happycapy-skills](https://github.com/happycapy-ai/Happycapy-skills)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-happycapy-ai-happycapy-skills-nano-banana-pro
- Seller: https://agentstack.voostack.com/s/happycapy-ai
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.