Lean MCP server for Google's Nano Banana (Gemini) image models. Returns file paths, not base64.
Lean MCP server for Google's Nano Banana (Gemini) image models. Returns file paths, not base64. Exposed over MCP by the nanobanana mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.
A lean MCP server for Google's Nano Banana (Gemini) image models. It generates and edits images from any MCP client (Claude Code, Claude Desktop, Cursor) and hands back file paths instead of base64, so your agent's context stays small.
The server ships on npm as @nanobanana/mcp, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.
Everything the assistant can do here goes through one of these:
generate_image — The generate_image tool exposed by this serveredit_image — The edit_image tool exposed by this serverlist_models — Takes no params. Lists the image model ids your API key can use. Handy when a pinned model id stops working, which is how earlier Nano Banana serversYou will need 2 environment variables: GEMINI_API_KEY, GOOGLE_API_KEY. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Nanobanana's toolset — generate_image, edit_image, list_models — is a fair guide to whether it matches your workflow. It is maintained by getjoystick; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| generate_image | The generate_image tool exposed by this server. |
| edit_image | The edit_image tool exposed by this server. |
| list_models | Takes no params. Lists the image model ids your API key can use. Handy when a pinned model id stops working, which is how earlier Nano Banana servers broke. |
{
"mcpServers": {
"nanobanana": {
"command": "npx",
"args": ["-y", "@nanobanana/mcp"],
"env": {
"GEMINI_API_KEY": "your-value",
"GOOGLE_API_KEY": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| GEMINI_API_KEY | Credential the server authenticates with. | Yes |
| GOOGLE_API_KEY | Credential the server authenticates with. | Yes |
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