Comfy MCP

What it does

The official server for ComfyUI, in two connections that share a vocabulary but not an identical tool list: a stdio server that drives the ComfyUI on your own machine through comfy-cli, and a hosted endpoint at cloud.comfy.org for people without a GPU. It reads your actual install — custom nodes, installed models, GPU specs — so an agent can tell you a model will not fit before it downloads 20GB, then run the workflow, poll the job and fetch the outputs. For a filmmaker that means local open video models on your own hardware with the vendor's own maintenance behind the server.

Connect

https://cloud.comfy.org/mcp

claude mcp add --transport http comfy-cloud https://cloud.comfy.org/mcp

{
  "mcpServers": {
    "comfy-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://cloud.comfy.org/mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "comfy-mcp": {
      "url": "https://cloud.comfy.org/mcp"
    }
  }
}

Local install: pip install comfy-mcp "comfy-cli>=1.14.0" then: claude mcp add comfy-mcp -e COMFY_BIN=/path/to/venv/bin/comfy -- comfy-mcp

Sample tools

Field notes

Comfy Org open-sourced the local server on Aug 18 2026. Re-checked 11 Oct 2026: the repo is busy — last commit Oct 10, 269 stars, not archived — but PyPI `comfy-mcp` and the newest tag are both still 0.10.0, so `pip install` gets you August's build and the fixes since then only arrive from a source checkout. Main now requires the MCP Python SDK 2.x (`mcp>=2,<3`), which matters if you install it into an environment that pins 1.x. Read the licence before you ship it inside a product: AGPL-3.0-or-later OR Commercial, not the MIT most of this directory carries. The local route is not a one-liner — it needs Python 3.10+, comfy-cli 1.14.0+ on PATH and a ComfyUI workspace, and the server refuses to start against an older comfy-cli. Local runs are free on your own hardware; the partner models (Flux, Ideogram, Kling, Veo, Runway and ~30 others) bill credits and each spend needs explicit confirmation. Cloud is the other half: `https://cloud.comfy.org/mcp` authenticates over OAuth in Claude Code and by an X-API-Key header (keys start `comfyui-`) for Cursor and headless clients; discovery works on a free Comfy account, but running generations needs an active Comfy Cloud subscription. The cloud tool list is its own — `submit_workflow`, `get_job_status`, batches, saved workflows, shareable app links — rather than a mirror of the local one. Caveats: it is a stdio subprocess, so it cannot coordinate an external LLM runtime, and pointing it at a remote ComfyUI disables the lifecycle tools (launch/stop/update). The older community `comfyui` entry still works but has not moved since January.

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