Agent skill · creative production · intellectronica
nano-banana-pro
Generate and edit images using Google's Nano Banana Pro (Gemini 3 Pro Image) API. Use when the user asks to generate, create, edit, modify, change, alter, or update images. Also use when user references an existing image file and asks to modify it in any way (e.g., "modify this image", "change the background", "replace X with Y"). Supports both text-to-image generation and image-to-image editing with configurable resolution (1K default, 2K, or 4K for high resolution). DO NOT read the image file first - use this skill directly with the --input-image parameter.
Why this skill is useful
Adds an executable script for generating and editing images using the Nano Banana Pro API, which includes specific commands and parameters not commonly known.
What it needs
Requires uv installed locally. Requires gemini account access. About 2k tokens when loaded. Last updated 2026-04-25. 281 stars on the source repository.
What this skill does
Nano Banana Pro Image Generation & Editing Generate new images or edit existing ones using Google's Nano Banana Pro API (Gemini 3 Pro Image). Usage Run the script using absolute path (do NOT cd to skill directory first): Generate new image: Edit existing image: Important: Always run from the user's current working directory so images are saved where the user is working, not in the skill directory. Resolution Options The Gemini 3 Pro Image API supports three resolutions (uppercase K required): 1K (default) - ~1024px resolution 2K - ~2048px resolution 4K - ~4096px resolution Map user requests to API parameters: No mention of resolution → 1K "low resolution", "1080", "1080p", "1K" → 1K "2K", "2048", "normal", "medium resolution" → 2K "high resolution", "high-res", "hi-res", "4K", "ultra" → 4K API Key The script checks for API key in this order: 1. --api-key argument (use if user provided key in chat) 2. GEMINIAPIKEY environment variable If neither is available, the script exits with an error message. Filename Generation Generate filenames with the pattern: yyyy-mm-dd-hh-mm-ss-name.png Format: {timestamp}-{descriptive-name}.png Timestamp: Current date/time in format yyyy-mm-dd-hh-mm-ss (24-hour format) Name: Descriptive lowercase text with hyphens Keep the descriptive part concise (1-5 words typically) Use context from user's prompt or conversation If unclear, use random identifier (e.g., x9k2, a7b3) Examples: Prompt "A serene Japanese garden" → 2025-11-23-14-23-05-japanese-garden.png Prompt "sunset over mountains" → 2025-11-23-15-30-12-sunset-mountains.png Prompt "create an image of a robot" → 2025-11-23-16-45-33-robot.png Unclear context → 2025-11-23-17-12-48-x9k2.png Image Editing When the user wants to modify an existing image: 1. Check if they provide an image path or reference an image in the current directory 2. Use --input-image parameter with the path to the image 3. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills intellectronica/skills--d890e5