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

# Signals overview

> Monitor your business with metric-based alerts and act on them directly.

**Signals** is Solya's alerting system. You define alerts that watch business metrics
across a perimeter; when a condition is met, Solya raises an **alert instance** you can
review and act on — for example by starting a restock, rebalance, or markdown plan.

<CardGroup cols={2}>
  <Card title="Alerts" icon="bell" href="/en/signals/alerts">
    Define, scope, and configure alerts and their notifications.
  </Card>

  <Card title="Tags & automation" icon="robot" href="/en/automation/tags">
    Tag entities and automate responses with workflows.
  </Card>
</CardGroup>

## How it works

<Steps>
  <Step title="Define alerts">
    Choose a metric, a condition, a perimeter, and (optionally) tag filters and
    notifications.
  </Step>

  <Step title="Evaluation runs">
    Solya periodically evaluates active alerts and raises instances for entities that
    breach their condition.
  </Step>

  <Step title="Review & act">
    Triage raised alerts (acknowledge / resolve / archive) and launch an inventory plan
    straight from an alert.
  </Step>
</Steps>

Alert lifecycle:

```mermaid theme={null}
stateDiagram-v2
  [*] --> DefineAlert: Create alert
  DefineAlert --> EvaluationRun: Periodic evaluation
  EvaluationRun --> RaisedInstance: Condition breached
  RaisedInstance --> Acknowledged: Review & triage
  RaisedInstance --> Resolved: Review & triage
  RaisedInstance --> Archived: Review & triage
  Acknowledged --> [*]
  Resolved --> [*]
  Archived --> [*]
```

<Note>
  Alerts can filter by [tags](/en/automation/tags), so "fast movers low on stock" is just
  a tag filter plus a stock metric. Repetitive responses can be fully automated with
  [workflows](/en/automation/workflows).
</Note>