Float input

WebApp_Floatinput is the node for the numbers with decimals - CFG scale, denoise, strength, any of the knobs your users should be able to drag but not break. It declares one floating-point control in the web app your workflow becomes, constrains it with min/max/step, and pipes the user's choice back into the graph as a value. Same family as WebApp_Integerinput, but for the non-integer knobs.

The pack's whole trick applies here: you define controls as nodes in ComfyUI, export the workflow API, and a framework like Simian WebApps turns the definition into a real form. In plain ComfyUI this node is just a pass-through; the slider lives in the app.

The inputs that matter

• value_in (FLOAT) - the value used when running the workflow in ComfyUI. Wire this to your downstream node and run locally like normal.
• default (FLOAT, default 0) - what the app's slider starts at.
• minimum / maximum (FLOAT) - the slider bounds. Here's the trap: both default to roughly ±9.2×10¹⁸. Leave them alone and the app will hand users a slider that's useless across 19 orders of magnitude. Set real bounds or your users get a field they can't meaningfully adjust.
• step (FLOAT, default 1) - how much the slider jumps.

The optional advanced flag hides the control unless the app is in advanced mode; parent attaches it to a WebApp_Grouping; tooltip is the hover text; and value_from_interface is a JSON string the app injects to override the value from the API side - ignore it unless you're writing framework code.

The outputs

• value (FLOAT, a list) - the number, downstream to your sampler or whatever takes it. It's a list because this pack leans on ComfyUI's list processing: give the app multiple values and the workflow loops.
• Order + 1 (INT) - the auto-sequence chain slot. Plug it into the next control's order and controls number themselves.

Installing it

Same one-time install as the rest of the pack:

cd ComfyUI/custom_nodes
git clone https://github.com/MonkeyProof-Solutions-BV/ComfyUI_webapp

Restart ComfyUI, or grab it via ComfyUI Manager (search ComfyUI_webapp, listed as "WebApp API"). No models, no keys; dependencies are just pillow and torch, both standard.

Gotchas

The min/max defaults are the big one - set them or your slider is fiction. Also keep the version note in mind: this pack is built on the newer backend node API (comfy_api.latest), so it needs a current ComfyUI. If the node is missing after install, update ComfyUI before debugging anything else.