ComfyUI Builder MCP

An MCP server that allows AI agents to control ComfyUI via 50+ tools. It enables node discovery, dynamic workflow building without JSON editing, real-time WebSocket execution, and model management. It integrates with Claude and Cursor to generate images based on natural language prompts.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by MIt9

Vendor documentation

What you can do with it

Discover available ComfyUI nodes dynamically
Build image generation workflows using templates
Execute workflows in real-time via WebSocket
Manage models and plugins within ComfyUI

Source and maintenance

Community listingRegistry 2.4.1

mcp-registry: io.github.MIt9/comfy-ui-builder@2.4.1 Source repository

Maintenance checked: Oct 31, 2026, 10:27 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

mcp-comfy-ui-builder 2.4.1

npm

mcp-comfy-ui-builder package definition

{
  "version": "2.4.1",
  "transport": "stdio",
  "identifier": "mcp-comfy-ui-builder",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "COMFYUI_HOST",
      "format": "string",
      "description": "ComfyUI API URL (e.g. http://127.0.0.1:8188). Required for execution, queue, outputs."
    },
    {
      "name": "COMFYUI_PATH",
      "format": "string",
      "description": "Path to ComfyUI install. Required for install_custom_node, install_model."
    },
    {
      "name": "COMFYUI_KNOWLEDGE_DIR",
      "format": "string",
      "description": "Path to knowledge directory (default: package knowledge/). Use when MCP runs from different cwd."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "comfyui-builder-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-comfy-ui-builder@2.4.1"
      ],
      "env": {
        "COMFYUI_HOST": "<YOUR_COMFYUI_HOST>",
        "COMFYUI_PATH": "<YOUR_COMFYUI_PATH>",
        "COMFYUI_KNOWLEDGE_DIR": "<YOUR_COMFYUI_KNOWLEDGE_DIR>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "comfyui-builder-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-comfy-ui-builder@2.4.1"
      ],
      "env": {
        "COMFYUI_HOST": "<YOUR_COMFYUI_HOST>",
        "COMFYUI_PATH": "<YOUR_COMFYUI_PATH>",
        "COMFYUI_KNOWLEDGE_DIR": "<YOUR_COMFYUI_KNOWLEDGE_DIR>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "comfyui-builder-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mcp-comfy-ui-builder@2.4.1"
      ],
      "env": {
        "COMFYUI_HOST": "<YOUR_COMFYUI_HOST>",
        "COMFYUI_PATH": "<YOUR_COMFYUI_PATH>",
        "COMFYUI_KNOWLEDGE_DIR": "<YOUR_COMFYUI_KNOWLEDGE_DIR>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "comfyui-builder-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-comfy-ui-builder@2.4.1"
      ],
      "env": {
        "COMFYUI_HOST": "<YOUR_COMFYUI_HOST>",
        "COMFYUI_PATH": "<YOUR_COMFYUI_PATH>",
        "COMFYUI_KNOWLEDGE_DIR": "<YOUR_COMFYUI_KNOWLEDGE_DIR>"
      }
    }
  }
}

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