A single ComfyUI node that reads any JSON file and automatically creates output slots for every key it finds. No hardcoded outputs — when your JSON structure changes, just click Refresh.

Features

• Auto-discovery — reads JSON keys and exposes them as named outputs
• Type detection — INT, FLOAT, STRING types with colored connectors
• Batch support — sequence_number input for batch_data arrays
• Connection-safe refresh — adding new keys preserves existing links
• Workflow persistence — keys, types, and connections survive save/reload

Installation

cd ComfyUI/custom_nodes/
git clone <this-repo> ComfyUI-JSON-Dynamic
# Restart ComfyUI

Usage

1. Add JSON Loader (Dynamic) node to your workflow
2. Enter a json_path and sequence_number
3. Click Refresh Outputs
4. Outputs appear named after your JSON keys with correct types
5. Connect to downstream nodes

Type Handling

JSON type	Output type	Connector
42 (integer)	INT	Blue
3.14 (float)	FLOAT	Teal
"hello" (string)	STRING	Pink
true / false	STRING ("true" / "false")	Pink

JSON Format

Works with flat JSON or batch_data arrays:

{
  "batch_data": [
    {
      "sequence_number": 1,
      "general_prompt": "A cinematic scene...",
      "seed": 42,
      "flf": 0.5,
      "camera": "pan_left",
      "my_custom_key": "any value"
    }
  ]
}

Without batch_data, reads keys directly from the root object.

License

Apache 2.0