Comfyui-mcp Server

MCP server for ComfyUI: text-to-image, variations, img2img refine, upscale, image proxy.

Local serverstreamable-http

What is the Comfyui-mcp Server?

Comfyui-mcp is an MCP integration. MCP server for ComfyUI: text-to-image, variations, img2img refine, upscale, image proxy.

Packages and local setup

The published npm package is @miller-joe/comfyui-mcp, version 0.2.1. Its declared MCP transport is streamable-http.

The package declares COMFYUI_URL: ComfyUI HTTP URL used internally by this server. Default: http://127.0.0.1:8188; COMFYUI_PUBLIC_URL: Externally-reachable ComfyUI URL used in image URLs returned to clients. Set when the internal URL isn't reachable from MCP clients (common with Docker networks).; COMFYUI_DEFAULT_CKPT: Default checkpoint filename. Default: sd_xl_base_1.0.safetensors.

Before connecting

Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.

Project and source

View the publisher’s registry entry · Project repository. This profile uses version 0.2.1 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.

Browse related developer tools MCP servers for tools that cover the same kind of work.

Configuration

VariableDescriptionRequired
COMFYUI_URLComfyUI HTTP URL used internally by this server. Default: http://127.0.0.1:8188Optional
COMFYUI_PUBLIC_URLExternally-reachable ComfyUI URL used in image URLs returned to clients. Set when the internal URL isn't reachable from MCP clients (common with Docker networks).Optional
COMFYUI_DEFAULT_CKPTDefault checkpoint filename. Default: sd_xl_base_1.0.safetensorsOptional