ComfyUI Builder MCP Server

Name: ComfyUI Builder MCP Server
Author: io.github.MIt9

io.github.MIt9/comfy-ui-builder

Repository Registry

What is the ComfyUI Builder MCP server?

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

How to install ComfyUI Builder

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

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

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "comfy-ui-builder": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-comfy-ui-builder"
      ],
      "env": {
        "COMFYUI_HOST": "<YOUR_COMFYUI_HOST>",
        "COMFYUI_PATH": "<YOUR_COMFYUI_PATH>",
        "COMFYUI_KNOWLEDGE_DIR": "<YOUR_COMFYUI_KNOWLEDGE_DIR>"
      }
    }
  }
}

Cursor

~/.cursor/mcp.json

{
  "mcpServers": {
    "comfy-ui-builder": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-comfy-ui-builder"
      ],
      "env": {
        "COMFYUI_HOST": "<YOUR_COMFYUI_HOST>",
        "COMFYUI_PATH": "<YOUR_COMFYUI_PATH>",
        "COMFYUI_KNOWLEDGE_DIR": "<YOUR_COMFYUI_KNOWLEDGE_DIR>"
      }
    }
  }
}

Windsurf

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "comfy-ui-builder": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-comfy-ui-builder"
      ],
      "env": {
        "COMFYUI_HOST": "<YOUR_COMFYUI_HOST>",
        "COMFYUI_PATH": "<YOUR_COMFYUI_PATH>",
        "COMFYUI_KNOWLEDGE_DIR": "<YOUR_COMFYUI_KNOWLEDGE_DIR>"
      }
    }
  }
}

VS Code

.vscode/mcp.json

{
  "servers": {
    "comfy-ui-builder": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mcp-comfy-ui-builder"
      ],
      "env": {
        "COMFYUI_HOST": "<YOUR_COMFYUI_HOST>",
        "COMFYUI_PATH": "<YOUR_COMFYUI_PATH>",
        "COMFYUI_KNOWLEDGE_DIR": "<YOUR_COMFYUI_KNOWLEDGE_DIR>"
      }
    }
  }
}

Claude Code

claude mcp add comfy-ui-builder --env COMFYUI_HOST=<YOUR_COMFYUI_HOST> --env COMFYUI_PATH=<YOUR_COMFYUI_PATH> --env COMFYUI_KNOWLEDGE_DIR=<YOUR_COMFYUI_KNOWLEDGE_DIR> -- npx -y mcp-comfy-ui-builder

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