SystemOne Nodes

ComfyUI nodes that ask a SystemOne server typed questions about some text and branch the workflow on the answers — e.g. pick a LoRA from the prompt.

Install

Clone into ComfyUI/custom_nodes/, then install the package into ComfyUI's environment:

cd ComfyUI && uv pip install --no-deps -e custom_nodes/systemone-nodes

Requires requests (already a ComfyUI dependency).

For a hosted server, set TYPESAFE_API_KEY in ComfyUI's environment. It is sent as a Bearer token and never stored in workflows.

SystemOne Question — one question: name, type (choice / score / noul), instructions, criteria.
- choice: one key: description per line
- score: one level per line, lowest first (2–10 levels)
- noul: optional true: ... / false: ... lines
SystemOne — sends state and all connected questions in one request to server_url (default http://localhost:8765/v1/systemone).
SystemOne Answer — picks one answer by name. Outputs choice (STRING), index (INT), value (FLOAT), confidence (FLOAT), probabilities (FLOAT list). Noul has no confidence and outputs 1.0.
SystemOne Threshold Switch — value >= threshold outputs on_true, otherwise on_false. Only the selected branch runs.
SystemOne Choice Switch — outputs option{index} (10 inputs). Only the selected option runs.

LoRA by name: make choice keys LoRA filenames → Answer choice → Convert String To Combo → LoraLoader lora_name.
LoRA by branch: Answer index → Choice Switch over the MODEL outputs of several LoraLoaders.
Confidence gate: Answer confidence → Threshold Switch (0.7) between the chosen branch and a default.
Strength from score: Answer value → Math Expression → LoraLoader strength_model.