comfy-mcp-server

# Comfy MCP Server > A server using FastMCP framework to generate images based on prompts via a remote Comfy server. ## Overview This script sets up a server using the FastMCP framework to generate images based on prompts using a specified workflow. It interacts with a remote Comfy server to submit prompts and retrieve generated images. ## Prerequisites - [uv](https://docs.astral.sh/uv/) package and project manager for Python. - Workflow file exported from Comfy UI. This code includes a sample `Flux-Dev-ComfyUI-Workflow.json` which is only used here as reference. You will need to export from your workflow and set the environment variables accordingly. You can install the required packages for local development: ```bash uvx mcp[cli] ``` ## Configuration Set the following environment variables: - `COMFY_URL` to point to your Comfy server URL. - `COMFY_WORKFLOW_JSON_FILE` to point to the absolute path of the API export json file for the comfyui workflow. - `PROMPT_NODE_ID` to the id of the text prompt node. - `OUTPUT_NODE_ID` to the id of the output node with the final image. - `OUTPUT_MODE` to either `url` or `file` to select desired output. Optionally, if you have an [Ollama](https://ollama.com) server running, you can connect to it for prompt generation. - `OLLAMA_API_BASE` to the url where ollama is running. - `PROMPT_LLM` to the name of the model hosted on ollama for prompt generation. Example: ```bash export COMFY_URL=http://your-comfy-server-url:port export COMFY_WORKFLOW_JSON_FILE=/path/to/the/comfyui_workflow_export.json export PROMPT_NODE_ID=6 # use the correct node id here export OUTPUT_NODE_ID=9 # use the correct node id here export OUTPUT_MODE=file ``` ## Usage Comfy MCP Server can be launched by the following command: ```bash uvx comfy-mcp-server ``` ### Example Claude Desktop Config ```json { "mcpServers": { "Comfy MCP Server": { "command": "/path/to/uvx", "args": [ "comfy-mcp-server" ], "env": { …