ComfyUI Mobile UI – Workflow Endpoints

This is a small ComfyUI custom node that adds HTTP endpoints for a standalone client (like the mobile UI in this repo) to:

• List workflow .json files stored on the ComfyUI machine
• Fetch a workflow JSON
• Fetch an API-compatible prompt JSON for a workflow (either already API prompt, or converted via an optional converter endpoint)
• Convert posted workflow JSON into an API prompt JSON

Endpoints

• GET /mobileui/info

  • Returns version + detected workflow directories + endpoint hints.

• GET /mobileui/workflows

  • Returns an array of objects:
    • name (string): workflow name / relative path without .json
    • bytes (number|null): file size
    • mtime (number|null): modified time (unix seconds)

• GET /mobileui/workflows/{name}

  • Returns the raw workflow JSON file.
  • {name} may include subfolders and may optionally include .json.

• GET /mobileui/workflows_api/{name}

  • Returns an API prompt JSON.
  • Behavior:
    1. If the JSON already looks like an API prompt (contains class_type entries), it is returned as-is.
    2. Otherwise, the node tries to POST the workflow JSON to POST /workflow/convert.
       • This requires the optional converter extension: https://github.com/SethRobinson/comfyui-workflow-to-api-converter-endpoint

• POST /mobileui/convert

  • Accepts any workflow JSON payload in the request body and returns an API prompt JSON.
  • Uses the same conversion rules as workflows_api.

• OPTIONS /mobileui/{tail:.*}

  • CORS preflight helper.

Install

Copy the folder comfyui_mobileui_workflow_list_endpoint into:

ComfyUI/custom_nodes/

Then restart ComfyUI.

CORS

This node can add CORS headers itself if you set:

• MOBILEUI_CORS_ORIGIN=http://localhost:5173 (or *)

You can also use ComfyUI's built-in CORS flag if you prefer.

Configuration

By default, it scans common locations relative to the ComfyUI root:

• <root>/workflows
• <root>/user/workflows
• <root>/examples
• <root>/examples/workflows
• <root>/pysssss-workflows (used by ComfyUI-Custom-Scripts)

You can override/add workflow directories with environment variables:

• COMFY_WORKFLOWS_DIR=/path/to/workflows
• COMFY_WORKFLOWS_DIRS=/path/one,/path/two

Notes

• Includes basic path traversal protection.
• Only serves files ending in .json.
• Conversion requires POST /workflow/convert to exist.