Gemini Nanobanana Mcp
@Junhan2
About Gemini Nanobanana Mcp
MCP server for Google Gemini 2.5 Flash Image preview (text-to-image, editing, composition)
Config
Add this server to your MCP-compatible client using the configuration below.
{
"mcpServers": {
"gemini-nanobanana-mcp": {
"command": "npx",
"args": [
"gemini-nanobanana-mcp@latest"
],
"env": {
"GEMINI_API_KEY": "your-api-key",
"AUTO_SAVE": "true",
"DEFAULT_SAVE_DIR": "~/Pictures/AI-Images",
"LOG_LEVEL": "debug"
}
}
}
}Tools
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Overview
What is Gemini Nanobanana Mcp?
Gemini Nanobanana Mcp is a beginner-friendly Model Context Protocol (MCP) server that brings Google’s Gemini 2.5 Flash image generation directly into Claude conversations. It enables text-to-image generation, image editing, multi-image composition, and style transfer—all through natural language prompts.
How to use Gemini Nanobanana Mcp?
Configure the server in Claude Desktop, Claude Code, or Cursor by adding a JSON entry with the npx command and your GEMINI_API_KEY environment variable. After restarting your client, simply ask Claude to generate, edit, or compose images. Images are auto-saved to ~/Downloads/gemini-images/ by default, and you can specify a custom path in your prompt.
Key features of Gemini Nanobanana Mcp
- Text-to-image generation from any description
- Edit uploaded images with natural language instructions
- Combine multiple images into a collage or composition
- Apply artistic style from one image to another
- Auto‑save images to disk or disable with
AUTO_SAVE=false - Optional HTTP mode for external integrations
Use cases of Gemini Nanobanana Mcp
- Generate custom illustrations, logos, or concept art during a chat
- Edit photos by describing the desired change (e.g., “make this black and white”)
- Create collages by uploading multiple reference images
- Apply a style reference image to a content image for artistic transfer
- Automatically save every generated image to a local folder for later use
FAQ from Gemini Nanobanana Mcp
What API key is required and where do I get it?
You need a Google AI Studio API key. Get one free at Google AI Studio by signing in with your Google account.
How do I install Gemini Nanobanana Mcp in Claude Desktop on Mac?
Open Terminal and run the one‑line command provided in the README that writes the configuration JSON to ~/Library/Application Support/Claude/claude_desktop_config.json, replacing YOUR_API_KEY with your actual key.
Why am I getting “GEMINI_API_KEY not set” error?
The API key is missing or incorrectly set. Double‑check your config file or environment variable, ensure there are no extra spaces, and restart your Claude client.
Can I change where images are saved or disable automatic saving?
Yes. Set DEFAULT_SAVE_DIR to a custom path, or set AUTO_SAVE to false to only save images when you explicitly request a path.
What image formats are supported and how do I get instant preview?
Supported formats: PNG, JPEG, WebP, and GIF. For instant preview in Claude Code, install the provided hooks from the repository—generated images will open automatically in Quick Look.
Frequently asked questions
What API key is required and where do I get it?
You need a Google AI Studio API key. Get one free at [Google AI Studio](https://aistudio.google.com/apikey) by signing in with your Google account.
How do I install Gemini Nanobanana Mcp in Claude Desktop on Mac?
Open Terminal and run the one‑line command provided in the README that writes the configuration JSON to `~/Library/Application Support/Claude/claude_desktop_config.json`, replacing `YOUR_API_KEY` with your actual key.
Why am I getting “GEMINI_API_KEY not set” error?
The API key is missing or incorrectly set. Double‑check your config file or environment variable, ensure there are no extra spaces, and restart your Claude client.
Can I change where images are saved or disable automatic saving?
Yes. Set `DEFAULT_SAVE_DIR` to a custom path, or set `AUTO_SAVE` to `false` to only save images when you explicitly request a path.
What image formats are supported and how do I get instant preview?
Supported formats: PNG, JPEG, WebP, and GIF. For instant preview in Claude Code, install the provided hooks from the repository—generated images will open automatically in Quick Look.
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