FLUX Image Generator MCP Server

# FLUX Image Generator MCP Server An MCP (Model Context Protocol) server for generating images using Black Forest Lab's FLUX model. Uses the latest MCP SDK (v1.7.0). ## Features - Generate images based on text prompts - Customize image dimensions, prompt upsampling, and safety settings - Save generated images locally - Batch image generation from multiple prompts ## Prerequisites - Node.js (v18.0.0 or higher) - Black Forest Lab API key (get one at https://api.bfl.ml) ## Installation ### From Source 1. Clone this repository 2. Install dependencies: ```bash npm install ``` 3. Create a `.env` file based on `.env.example` and add your Black Forest Lab API key: ``` BFL_API_KEY=your_api_key_here ``` 4. Build the project: ```bash npm run build ``` ### Using npm ```bash npm install -g @modelcontextprotocol/server-flux-image-generator ``` ## Usage ### Starting the MCP Server Start the server with: ```bash npm start ``` For development with auto-recompilation: ```bash npm run watch ``` ### Integrating with MCP Clients To use this server with MCP clients (like Claude), add the following to your client's configuration: ```json { "mcpServers": { "flux-image-generator": { "command": "mcp-server-flux-image-generator", "env": { "BFL_API_KEY": "your_api_key_here" } } } } ``` ## Available Tools ### generateImage Generates an image based on a text prompt with customizable settings. **Parameters:** - `prompt` (string, required): Text description of the image to generate - `width` (number, optional, default: 1024): Width of the image in pixels - `height` (number, optional, default: 1024): Height of the image in pixels - `promptUpsampling` (boolean, optional, default: false): Enhance detail by upsampling the prompt - `seed` (number, optional): Random seed for reproducible results - `safetyTolerance` (number, optional, default: 3): Content moderation tolerance (1-5) **Example:** ```json { "prompt": "A serene lake at sunset with mountains in the background", "width": 1024, "height": 768, "promptUpsampling": true, "seed": 12345, "safetyTolerance": 3 } ``` ### quickImage A simplified tool for quickly generating images with default settings. **Parameters:** - `prompt` (string, required): Text description of the image to generate **Example:** ```json { "prompt": "A futuristic cityscape with flying cars" } ``` ### batchGenerateImages Generates multiple images from a list of prompts. **Parameters:** - `prompts` (array of strings, required): List of text prompts (maximum 10) - `width` (number, optional, default: 1024): Width of the images - `height` (number, optional, default: 1024): Height of the images **Example:** ```json { "prompts": [ "A serene lake at sunset", "A futuristic cityscape", "A magical forest with glowing plants" ], "width": 1024, "height": 768 } ``` ## Output Format All tools return responses in this format: ```json { "image_url": "https://storage.example.com/generated_image.jpg", "local_path": "/path/to/output/flux_1234567890.png" } ``` For errors: ```json { "error": true, "message": "Error description" } ``` The batch tool returns: ```json { "total": 3, "successful": 2, "failed": 1, "results": [ { "prompt": "A serene lake at sunset", "success": true, "image_url": "https://storage.example.com/image1.jpg", "local_path": "/path/to/output/flux_batch_1234567890_0.png" }, { "prompt": "A futuristic cityscape", "success": true, "image_url": "https://storage.example.com/image2.jpg", "local_path": "/path/to/output/flux_batch_1234567890_1.png" }, { "prompt": "Prohibited content", "success": false, "error": "Content policy violation" } ] } ``` ## License MIT