nano-banana-antigravity

✓Verified·Scanned 2/17/2026

Generate or edit images via Nano Banana Pro using Antigravity OAuth (no API key needed!)

from clawhub.ai·vd6db5fb·22.6 KB·0 installs

Scanned from 1.1.0 at d6db5fb · Transparency log ↗

$ vett add clawhub.ai/cgnl/nano-banana-antigravity

nano-banana-antigravity

🍌 Generate images using Nano Banana Pro (Gemini 3 Pro Image) via your existing Google Antigravity OAuth credentials.

No separate API key needed! Uses the same OAuth tokens as your OpenClaw Antigravity provider.

Features

✅ Uses existing OpenClaw Antigravity OAuth tokens
✅ No separate Gemini API key required
✅ Supports Nano Banana Pro (with fallback to regular Nano Banana)
✅ WhatsApp HD ready - auto-converts to progressive JPEG <6.28MB
✅ Multiple aspect ratios: 1:1, 16:9, 9:16, 4:3, 3:4, etc.
✅ Multiple resolutions: 1K, 2K, 4K
✅ Image editing and multi-image composition
✅ Automatic account rotation (12 Antigravity accounts)

Prerequisites

OpenClaw with google-antigravity-auth plugin enabled
Authenticated Antigravity account: openclaw models auth login --provider google-antigravity
uv (Python package runner): brew install uv

Usage

Generate Image (WhatsApp HD - Recommended)

./skills/nano-banana-antigravity/scripts/generate_whatsapp_hd.sh \
  --prompt "a sunset over mountains" \
  --filename "sunset.jpg" \
  --aspect-ratio 16:9 \
  --resolution 4K

What it does:

Generates 4K image via Nano Banana Pro
Auto-converts PNG → progressive JPEG
Optimizes quality to stay under 6.28MB
WhatsApp HD ready (no compression!)

Generate PNG (Standard)

uv run skills/nano-banana-antigravity/scripts/generate_image.py \
  --prompt "a futuristic city skyline" \
  --filename "city.png" \
  --aspect-ratio 16:9 \
  --resolution 2K

Edit Image

uv run skills/nano-banana-antigravity/scripts/generate_image.py \
  --prompt "add sunglasses to this person" \
  --filename "edited.png" \
  -i original.png

Multi-image Composition

uv run skills/nano-banana-antigravity/scripts/generate_image.py \
  --prompt "combine these into one scene" \
  --filename "composite.png" \
  -i image1.png -i image2.png

Options

Option	Short	Description	Default
`--prompt`	`-p`	Image description (required)	-
`--filename`	`-f`	Output filename (required)	-
`--input-image`	`-i`	Input image for editing (repeatable)	-
`--aspect-ratio`	`-a`	Aspect ratio	1:1
`--resolution`	`-r`	Resolution (1K, 2K, 4K)	1K

Supported Aspect Ratios

1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9

How It Works

This skill uses the same CloudCode API that powers Google Antigravity's built-in image generation. It reads your existing OAuth refresh tokens from OpenClaw's auth-profiles and uses them to call the Gemini 3 Pro Image model.

License

MIT