> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sndbox.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Workflow state and change detection

> Store values per workflow and compare a run with the last successfully committed value.

Workflow state is scoped to one workflow. It is useful for cursors, last-seen values, and change detection that must survive separate runs.

## State nodes

* **Get Workflow State** returns `value` and `found`, using `defaultValue` when the key is absent.
* **Set Workflow State** stages a value under one key.
* **Compare With Previous** returns `changed`, `previous`, and `current`, then stages the current value.

```json title="Normalize monitored text" theme={"system"}
{
  "key": "website-heading",
  "value": "{{nodes.extract.output.data.heading}}",
  "normalization": "collapse_whitespace"
}
```

Normalization options are exact (`none`), `trim`, `lowercase` (trim and lowercase), and `collapse_whitespace`.

## Commit rule

State changes commit only after the complete workflow succeeds. If a later node fails, a comparison value is not advanced. A node test previews state behavior without committing it.

This rule prevents a failed notification or downstream action from causing the next run to believe the change was already processed.