🔢 AGSoft Loop Integer

The simplest member of the AGSoft loop family, and the one everything else builds on. AGSoft Loop Integer generates an integer sequence from a start to an end with a step, and hands it back as a list for your loop nodes to chew through. The feature in the name: the end value is included. start=0, end=3 gives you [0, 1, 2, 3], not [0, 1, 2].

That inclusive end is not a triviality. Python's own range() stops one short, and a disturbing number of ComfyUI list generators inherited that behavior. When you're looping seeds or step counts, the difference between "my loop covers 0 through 10" and "my loop covers 0 through 9, then silently ends" is the difference between a correct sweep and a workflow that misses the value you most wanted to test.

How it works

• start_at_step - the first number (default 0). Negative values work, so [5, 4, 3, ...] descending is just start > end.
• end_at_step - the last number, and per the docs it IS included. start=5, end=5 yields [5] - a single value, no crash.
• jump - the step (1–1000, must be ≥1). jump=2 from 0 to 6 gives [0, 2, 4, 6]. Step 0 raises a clear error rather than hanging.

Output: a single INT list. The node also implements IS_CHANGED keyed on the three inputs, so it only re-runs when your range actually changes - a small efficiency win in a graph that executes a lot.

Installation

From comfyui-AGSoft:

cd ComfyUI/custom_nodes
git clone https://github.com/Art-xmaster/comfyui-AGSoft.git
# restart ComfyUI

Or ComfyUI Manager → search "comfyui-AGSoft". No models, no extra deps.

Where it fits

Any loop that iterates integers: seed walks, step schedules, batch indices. Pair it with the pack's AGSoft Loop Fix Integer when you want to hand-type specific values instead of generating a range, or with AGSoft Loop Float when your sweep needs fractional steps. The one honest caveat: if your loop framework has its own inclusive range generator, this adds nothing. If it doesn't, you'll find out the hard way why "inclusive end" is the feature that matters.