Gemini Image MCP Server

This is an MCP (Model Context Protocol) server that uses Google's Gemini API to generate images and save them to a specified directory. In addition to text prompts, you can optionally provide input images to guide the image generation process. Generated images are automatically compressed to reduce file size.

- Image generation from text prompts
- (Optional) Image generation using input reference images
- Automatic compression of generated images (JPEG, PNG)
- Unique file name assignment to prevent file name conflicts
- Operates as an MCP server, accepting tool calls via standard input/output

- Node.js (v18 or higher recommended)
- Google Cloud Project with Gemini API enabled
- Gemini API Key

Example MCP server configuration for Roo Code

{ "mcpServers": { "gemini-image-mcp-server": { "command": "npx", "args": [ "-y", "@creating-cat/gemini-image-mcp-server" ], "env": { "GEMINI_API_KEY": "YOUR_GEMINI_API_KEY" }, "disabled": false, "timeout": 300 } } }

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ReplaceYOUR_GEMINI_API_KEYwith your actual Gemini API Key.

- You can also use${env:GEMINI_API_KEY}to retrieve the key from environment variables (Roo Code feature).

This MCP server provides a tool namedgenerate_image.

On success, the server returns the save path of the generated image and a message detailing the process, including the original and compressed file sizes. Example:

{ "content": [ { "type": "text", "text": "Image successfully generated and compressed at output/images/my_cat.jpg.\nOriginal size: 1024.12KB, Final size: 150.45KB" } ] }

If an error occurs, an error message will be returned.

- The MIME type and aspect ratio of the generated images depend on the default settings of the Gemini API.
- Handle your API key with care.
- This server uses the modelgemini-2.0-flash-preview-image-generation. Google may discontinue this model in the future.

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