dcc-mcp-comfyui

DCC-MCP · COMFYUI

Production ComfyUI adapter for the DCC Model Context Protocol (MCP) ecosystem. It gives agents a typed, bounded path from API-format workflow validation to queue execution and artifact delivery through ComfyUI's local REST API.

Validate, execute, and deliver a ComfyUI workflow

Illustrative workflow generated with OpenAI ImageGen from the retained source in docs/assets/sources; it depicts only the implemented validation, queue, polling, and artifact-delivery path.

Capabilities

  • validate_workflow checks API-format structure, graph references, live node classes, and required inputs against the running ComfyUI registry.
  • submit_workflow validates before queue submission and can wait for a bounded terminal result.
  • query_job_status returns status, node outputs, errors, and normalized artifact metadata.
  • get_artifact builds a local download URL for a known output without exposing filesystem paths.
  • Standalone discovery, packaged Skill subprocesses, and six-part DCC-MCP readiness are supported out of the box.

The production path was live-validated on ComfyUI 0.31.0 with a three-node EmptyImage -> ImageInvert -> SaveImage workflow, including typed CLI validation, execution, status polling, and artifact retrieval.

Quick Start

# Install
pip install dcc-mcp-comfyui

# Start ComfyUI locally (in another terminal)
python main.py --listen 127.0.0.1

# Start the MCP server
dcc-mcp-comfyui --comfyui-base-url http://127.0.0.1:8188

Environment Variables

Variable Default Description
DCC_MCP_COMFYUI_BASE_URL http://127.0.0.1:8188 ComfyUI server URL
DCC_MCP_COMFYUI_TIMEOUT 120 Request timeout (seconds)
DCC_MCP_COMFYUI_PORT OS-assigned MCP instance port
DCC_MCP_GATEWAY_PORT 9765 Gateway port
DCC_MCP_COMFYUI_ENABLE_GATEWAY_FAILOVER true Gateway failover

Skills

comfyui-workflow

The bundled Skill for ComfyUI workflow management:

  • validate_workflow — Validate workflow JSON structure
  • submit_workflow — Submit workflow for execution
  • query_job_status — Poll execution status and outputs
  • get_artifact — Get download URL for output images

MCP Client Config

{
  "mcpServers": {
    "dcc-mcp-comfyui": {
      "url": "http://127.0.0.1:9765/mcp"
    }
  }
}

Build & Test

uv pip install -e ".[dev]"
uv run pytest
uv run ruff check src/ tests/

Architecture

MCP Client → Gateway (:9765) → ComfyUiMcpServer (OS port)
    └─ Skill scripts → ComfyUIBridge → ComfyUI REST API (:8188)

License

MIT

Project links

Data verified by PyPI on Aug 12, 2026
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Key dates

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  • Released:
Newer release available (0.1.4)

1 maintainer

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Avatar for hao.long from gravatar.com hao.long

Credits

Author: Long Hao

GitHub Statistics

Data verified by PyPI on Aug 12, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License

MIT License (MIT)

Requires

Python >=3.10

Provides Extra

dev

Tags

ai comfyui dcc llm mcp model-context-protocol stable-diffusion workflow

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