comfyui-mcp MCP server

Local-first, agent-native control plane for ComfyUI — MCP server + sidebar agent that generates images, video & audio, authors and runs workflows, and edits your live graph in natural language on ANY LLM (Claude, ChatGPT, Gemini, offline Ollama, or any hosted model). 178 tools, 36 AI skills, 55 installer packs. Local, LAN, VPS, or Comfy Cloud.

What comfyui-mcp does

Summarised from the project README; check the repository for the latest details.

Tools exposed (15)

• Defaults
• queue – One action-parameterized tool for the execution queue: `list` (running + pending), `status` (one job by prompt ID), `getworkflow` (a pending
• get_system_stats – Get system info — GPU, VRAM, Python version, OS
• visualize_workflow – One action-parameterized tool for rendering and converting a workflow you pass in: `render` (Mermaid flowchart, nodes grouped by category),
• create_workflow – One action-parameterized tool for authoring: `create` (from templates: `txt2img`, `img2img`, `upscale`, `inpaint`, `controlnet`, `ipadapter`
• get_workflow – One action-parameterized tool for READING a saved workflow file: `list` (the user library, subfolders included), `get` (one workflow's JSON
• save_workflow – One action-parameterized tool for WRITING to the library: `save` (store a workflow — overwrites a same-filename file), `lock` (record a prov
• upload_image – Copy a local image into ComfyUI's `input/` directory for img2img, inpaint, or ControlNet
• download_model – Find and fetch model weights, and track the transfers. `action`: `download` (from a URL, into the correct ComfyUI subdirectory), `status`, `
• list_local_models – What is installed, and where ComfyUI looks. `action`: `list` (installed models by type: checkpoints, loras, vae, upscalemodels, controlnet,
• clear_vram – Free GPU VRAM by unloading cached models — calls ComfyUI's `/free` endpoint, reports before/after stats
• search_custom_nodes – Search the ComfyUI Registry for node packs by keyword (`action: "search"`), or get one pack's full details (`action: "details"`)
• comfy_cli – Search actual loaded node classes through official `comfy nodes search` (action:"searchnodes")
• Diagnostics
• kitchen – See what comfy-kitchen can do on this GPU (`status`), find where a graph leaves it on the table (`assess`), and apply the faster path (`appl

Requirements

• Node.js >= 22.0.0
• ComfyUI running locally
• Node.js (runs with npx)
• Environment variables: CIVITAI_API_TOKEN

How to install comfyui-mcp MCP in Claude Desktop, Cursor and VS Code

{
  "mcpServers": {
    "comfyui": {
      "command": "npx",
      "args": [
        "-y",
        "comfyui-mcp"
      ],
      "env": {
        "CIVITAI_API_TOKEN": ""
      }
    }
  }
}

{
  "mcpServers": {
    "comfyui": {
      "command": "npx",
      "args": [
        "-y",
        "comfyui-mcp"
      ],
      "env": {
        "CIVITAI_API_TOKEN": ""
      }
    }
  }
}

{
  "servers": {
    "comfyui": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "comfyui-mcp"
      ],
      "env": {
        "CIVITAI_API_TOKEN": ""
      }
    }
  }
}

Add to config generator – combine it with other servers, or get the Windsurf format.

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