nano-banana-pro-openrouter

Installation

Summary

Image generation and editing via OpenRouter's Gemini 3 Pro model with multi-image compositing support.

Supports three workflows: prompt-only generation, single-image editing, and multi-image composition (up to 3 images per request)
Output resolution options: 1K, 2K, or 4K (defaults to 1K)
Customizable behavior through optional system prompt template in assets/SYSTEM_TEMPLATE
Requires OPENROUTER_API_KEY environment variable and uv package manager; includes troubleshooting guidance for authentication and dependency issues

SKILL.md

Nano Banana Pro OpenRouter

Overview

Generate or edit images with OpenRouter using the google/gemini-3-pro-image-preview model. Support prompt-only generation, single-image edits, and multi-image composition.

Prompt-only generation

uv run {baseDir}/scripts/generate_image.py \
  --prompt "A cinematic sunset over snow-capped mountains" \
  --filename sunset.png

Edit a single image

Installs

9.6K

Repository

github/awesome-copilot

GitHub Stars

35.8K

First Seen

Feb 10, 2026

Security Audits

Gen Agent Trust HubFail

SocketPass

SnykFail