ComfyUI Builder

ComfyUI MCP server: knowledge base, workflow builder, real-time execution, models, plugins.

stdio v2.4.1

Connection Configuration

Add this to your AI agent's MCP config file to connect.

Run in your terminal:

claude mcp add io.github.mit9--comfy-ui-builder -- npx

Transport

stdio

Authentication

None

Version

v2.4.1

Server Name

io.github.MIt9/comfy-ui-builder

Last Updated

Feb 3, 2026

How to install and connect this MCP server.

Environment variables you must provide when running this server.

Variable	Description	Required
`COMFYUI_HOST`	ComfyUI API URL (e.g. http://127.0.0.1:8188). Required for execution, queue, outputs.	Optional
`COMFYUI_PATH`	Path to ComfyUI install. Required for install_custom_node, install_model.	Optional
`COMFYUI_KNOWLEDGE_DIR`	Path to knowledge directory (default: package knowledge/). Use when MCP runs from different cwd.	Optional