AI image generation and editing with Google Gemini: Nano Banana 2.1, Pro and Lite models
An MCP server for AI image generation and editing using Google Gemini. Works with Claude Code, Cursor, and other MCP clients.
Models supported:
| Brand name | Model ID | Notes |
|---|---|---|
| Nano Banana 2.1 | gemini-nano-banana-2.1 | Default — pro quality at Flash speed |
| Nano Banana Pro | gemini-3-pro-image | Highest quality, advanced reasoning |
| Nano Banana 2 | gemini-3.1-flash-image | Previous default |
| Nano Banana 2 Lite | gemini-3.1-flash-lite-image | Fastest and cheapest — 1K output only |
| Nano Banana | gemini-2.5-flash-image | Legacy — shut down by Google on 2027-03-15 |
Get a Gemini API key from Google AI Studio
Add to your MCP client config (Claude Code example):
{
"mcpServers": {
"nano-banana": {
"command": "npx",
"args": ["-y", "github:fjacquet/Nano-Banana-MCP"],
"env": {
"GEMINI_API_KEY": "your-key-here"
}
}
}
}
See docs/configuration.md for Cursor and other MCP clients.
Generate an image of a sunset over mountains
Edit this image to add some birds in the sky
Continue editing to make it more dramatic
| Tool | Description |
|---|---|
generate_image | Create new images from text prompts |
edit_image | Modify existing images with optional reference images |
continue_editing | Iteratively edit the last image |
get_last_image_info | Get info about the last image |
configure_gemini_token | Set API key |
get_configuration_status | Check configuration |
All generation/editing tools accept an optional model parameter to choose between the two models.
See docs/tools.md for full API reference, docs/configuration.md for setup details, and docs/workflows.md for usage patterns.
npm install
npm run dev # Run with tsx
npm run build # Compile TypeScript
npm test # Run tests
npm run lint # Lint
npm run typecheck # Type-check
Requires Node.js >= 18.0.0.
MIT — see LICENSE.
Fork of ConechoAI/Nano-Banana-MCP.
Source-derived launch command. Check the maintainer’s required arguments and credentials before running:
npx -y @fjacquet/nano-banana-mcpMerge this template into ~/Library/Application Support/Claude/claude_desktop_config.json. Keep existing servers. Add any arguments, credentials, and permissions required by the maintainer; this template has not been install-tested.
{
"mcpServers": {
"io-github-fjacquet-nano-banana-mcp": {
"command": "npx",
"args": [
"-y",
"@fjacquet/nano-banana-mcp"
]
}
}
}Restart Claude Desktop completely for changes to take effect. Confirm the server appears connected in the client’s tool list, then try a read-only example from its documentation.
Claude Desktop setup reference@fjacquet/nano-banana-mcpnpmio.github.fjacquet/nano-banana-mcp works with any MCP-compatible client. Copy the config snippet from the Configuration section above and add it to the file shown for your client, then restart the application.
~/Library/Application Support/Claude/claude_desktop_config.jsonRestart Claude Desktop completely for changes to take effect.~/.cursor/mcp.jsonRestart Cursor for changes to take effect..vscode/mcp.jsonReload VS Code window for changes to take effect.~/.codeium/windsurf/mcp_config.jsonRestart Windsurf for changes to take effect..mcp.jsonSave at the project root, then start Claude Code in that project and review the MCP server approval prompt. Keep real credentials out of shared files.