---
name: nano-banana-antigravity
description: Generate or edit images via Nano Banana Pro using Antigravity OAuth (no API key needed!)
homepage: https://antigravity.google
metadata: {"openclaw":{"emoji":"🍌","requires":{"bins":["uv"]}}}
---

# Nano Banana Antigravity (Gemini 3 Pro Image via OAuth)

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.

## Generate Image

**For WhatsApp HD (recommended):**
```bash
{baseDir}/scripts/generate_whatsapp_hd.sh \
  --prompt "your image description" \
  --filename "output.jpg" \
  --aspect-ratio 16:9 \
  --resolution 4K
```

**Standard PNG output:**
```bash
uv run {baseDir}/scripts/generate_image.py --prompt "your image description" --filename "output.png"
```

## Generate with Options

```bash
{baseDir}/scripts/generate_whatsapp_hd.sh \
  --prompt "a sunset over mountains" \
  --filename "sunset.jpg" \
  --aspect-ratio 16:9 \
  --resolution 4K
```

**What `generate_whatsapp_hd.sh` does:**
- ✅ Auto-converts PNG → progressive JPEG
- ✅ Optimizes quality (85-92%) to stay under 6.28MB
- ✅ WhatsApp HD ready (no compression!)
- ✅ Warns if image is too large

## Edit/Composite Images

```bash
uv run {baseDir}/scripts/generate_image.py \
  --prompt "add sunglasses to this person" \
  --filename "edited.png" \
  -i original.png
```

## Multi-image Composition

```bash
uv run {baseDir}/scripts/generate_image.py \
  --prompt "combine these into one scene" \
  --filename "composite.png" \
  -i image1.png -i image2.png -i image3.png
```

## Options

- `--prompt, -p` (required): Image description or edit instructions
- `--filename, -f` (required): Output filename
- `--input-image, -i`: Input image(s) for editing (can be repeated)
- `--aspect-ratio, -a`: 1:1 (default), 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9
- `--resolution, -r`: 1K, 2K (default), 4K

## Authentication

Uses existing OpenClaw Antigravity OAuth credentials. Make sure you're authenticated:

```bash
openclaw models auth login --provider google-antigravity
```

The script looks for credentials in:
- `~/.openclaw/credentials/google-antigravity.json`
- `~/.config/openclaw/credentials/google-antigravity.json`
- `~/.config/opencode/antigravity-accounts.json`

## WhatsApp HD Upload Limits

**For best WhatsApp HD quality:**
- Use `generate_whatsapp_hd.sh` instead of `generate_image.py`
- Output filename must end in `.jpg` or `.jpeg`
- Images ≤6.28MB will upload without compression
- Images >6.28MB may be compressed by WhatsApp

**Size guidelines:**
- ≤6.28MB → ✅ HD (no compression)
- 6.29-6.5MB → Slight compression (~5.7MB)
- 6.5-7.6MB → Moderate compression (~6.2MB)
- >9MB → ⚠️ Heavy compression

## Notes

- 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.
- Uses timestamps in filenames for uniqueness: `yyyy-mm-dd-hh-mm-ss-name.png`
- Falls back to regular Nano Banana if Nano Banana Pro isn't available yet.
- **Account rotation:** Automatically tries all 12 Antigravity accounts on rate limits


---
Source attribution: kbarbel640-del
Original project: https://github.com/kbarbel640-del/skills/blob/e7e336ac628c3e3bd771aff1aaa469c93778f94a/skills/cgnl/nano-banana-antigravity/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Dave AI.

## Upstream license notice

MIT License

Copyright (c) 2026 clawdbot

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Dave AI resource metadata

Creator / publisher: kbarbel640-del
Original project: https://github.com/kbarbel640-del/skills/blob/e7e336ac628c3e3bd771aff1aaa469c93778f94a/skills/cgnl/nano-banana-antigravity/SKILL.md
Attribution basis: Source repository record

Fields of work: Content & Media, Design
Roles: Graphic Designer, UX Designer, Video Producer
Specialties: Design
Tools: OpenAI API, Nano Banana Pro, WhatsApp
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: 657238a9dbcbb9c577036dba26ea0445e283ff9772e0018ef636878065b918f3