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nano-banana-pro

Nano Banana Pro generates new images from text prompts or edits existing images using Google's Gemini 3 Pro vision model. Use this skill when you need to create original images, modify single images with instructions, or composite multiple images into one scene at resolutions up to 4K.

View source Repository: trpc-agent-go

Install in Claude Code

Copy

git clone --depth 1 https://github.com/trpc-group/trpc-agent-go /tmp/nano-banana-pro && cp -r /tmp/nano-banana-pro/openclaw/skills/nano-banana-pro ~/.claude/skills/nano-banana-pro

Then start a new Claude Code session; the skill loads automatically.

Definition

SKILL.md

# Nano Banana Pro (Gemini 3 Pro Image)

Use the bundled script to generate or edit images.

Generate

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

Edit (single image)

```bash
uv run {baseDir}/scripts/generate_image.py --prompt "edit instructions" --filename "output.png" -i "/path/in.png" --resolution 2K
```

Multi-image composition (up to 14 images)

```bash
uv run {baseDir}/scripts/generate_image.py --prompt "combine these into one scene" --filename "output.png" -i img1.png -i img2.png -i img3.png
```

API key

- `GEMINI_API_KEY` env var
- Or set `skills."nano-banana-pro".apiKey` / `skills."nano-banana-pro".env.GEMINI_API_KEY` in `~/.openclaw/openclaw.json`

Notes

- Resolutions: `1K` (default), `2K`, `4K`.
- Use timestamps in filenames: `yyyy-mm-dd-hh-mm-ss-name.png`.
- The script prints a `MEDIA:` line for OpenClaw to auto-attach on supported chat providers.
- Do not read the image back; report the saved path only.