Nano Banana Edit

# Nano Banana Edit — Pro Pack on RunComfy

[runcomfy.com](https://www.runcomfy.com/?utm_source=skills.sh&utm_medium=skill&utm_campaign=nano-banana-edit) · [Edit endpoint](https://www.runcomfy.com/models/google/nano-banana-2/edit?utm_source=skills.sh&utm_medium=skill&utm_campaign=nano-banana-edit) · [GitHub](https://github.com/agentspace-so/runcomfy-skills/tree/main/nano-banana-edit)

Google **Nano Banana 2 Edit** — the image-to-image edit endpoint of the Gemini-family flash-tier image model — hosted on the **RunComfy Model API**. Up to **20 input images per call** for batch edits and multi-reference variation.

```bash
npx skills add agentspace-so/runcomfy-skills --skill nano-banana-edit -g
```

## When to pick this model (vs siblings)

| You want | Use |
|---|---|
| Preserve subject identity, swap background or clothing | **Nano Banana Edit** |
| Edit up to 20 images consistently in one batch | **Nano Banana Edit** |
| Localize edit to "X only" with spatial language | **Nano Banana Edit** |
| Edit multilingual text inside the image (signs, labels) | GPT Image 2 edit |
| Single ref + precise local edit ("she's now holding X") | Flux Kontext |
| Generate a new image from scratch | Nano Banana 2 t2i (sibling skill) |

If the user said "nano banana edit" / "edit with nano banana" explicitly, route here regardless.

## Prerequisites

1. **RunComfy CLI** — `npm i -g @runcomfy/cli`
2. **RunComfy account** — `runcomfy login` opens a browser device-code flow.
3. **CI / containers** — set `RUNCOMFY_TOKEN=<token>` instead of `runcomfy login`.

## Endpoints + input schema

### `google/nano-banana-2/edit`

| Field | Type | Required | Default | Notes |
|---|---|---|---|---|
| `prompt` | string | yes | — | Edit instruction. Lead with preservation, end with the change. |
| `image_urls` | array | yes | — | **1–20** publicly-fetchable HTTPS URLs. |
| `number_of_images` | int | no | 1 | 1–4 outputs per call. |
| `seed` | int | no | — | Reproducibility. |
| `aspect_ratio` | enum | no | `auto` | `auto` (follows input) or fixed ratios — lock for batch consistency. |
| `resolution` | enum | no | `1K` | `0.5K` / `1K` / `2K` / `4K`. |
| `output_format` | enum | no | `png` | `png` / `jpeg` / `webp`. |
| `safety_tolerance` | int | no | 4 | 1 (strict) – 6 (permissive). |
| `limit_generations` | bool | no | — | If true, restricts each round to one output. |
| `enable_web_search` | bool | no | false | Web grounding (extra cost / latency). |

## How to invoke

**Single-image background swap, identity preserved:**

```bash
runcomfy run google/nano-banana-2/edit \
  --input '{
    "prompt": "Keep the subject identity, pose, and clothing unchanged. Convert the background into a rainy neon cyberpunk street.",
    "image_urls": ["https://.../portrait.jpg"]
  }' \
  --output-dir <absolute/path>
```

**Batch edit with locked framing:**

```bash
runcomfy run google/nano-banana-2/edit \
  --input '{
    "prompt": "Replace the watermark in the bottom-right with the text \"AURA\" in clean white sans-serif. Keep everything else exactly as in the input.",
    "image_urls": ["https://.../sku-1.jpg", "https://.../sku-2.jpg", "https://.../sku-3.jpg"],
    "aspect_ratio": "1:1",
    "resolution": "1K"
  }' \
  --output-dir <absolute/path>
```

**Targeted spatial edit ("left