---
title: "What conditions and operators can I use in Alert Rules? —…"
description: "Rules support metric-based conditions (uptime, response time, SSL, status code, visual diff, SEO score) with numeric, boolean, and change operators."
canonical: "https://lemwatch.com/help/alert-rule-conditions-and-operators"
source: "https://lemwatch.com"
---

# What conditions and operators can I use in Alert Rules?

> Rules support metric-based conditions (uptime, response time, SSL, status code, visual diff, SEO score) with numeric, boolean, and change operators.

## Quick answer

 Supported operators: > , >= , < , <= , == , != , changed , increased by % , decreased by % , and for duration . Supported metrics span uptime, response time, SSL days-to-expiry, HTTP status, visual diff %, and SEO score.

## Supported metric families

- Uptime — status (up/down), consecutive failures

- Response time — ms value, % change vs rolling baseline

- SSL — days to expiry, issuer change, chain valid

- HTTP — status code, response header presence

- Visual — diff %, region-scoped diff, text change

- SEO — score delta, title/meta change, sitemap 404s

- DNS — record change (A / MX / NS / CNAME)

## Where to find it in Lemwatch

 **Settings → Alerts → Rules → New rule → Add condition**.

## How to combine conditions

- Add a first condition (e.g. status code != 200).

- Click + AND or + OR for more conditions.

- Use for duration to require the condition to hold (kills flapping).

- Preview against the last 24h of data before saving.

## FAQ

### What does "changed" mean for numeric metrics?

 Any non-zero delta from the previous check. Use % change for smoother triggers.

### Can I compare two metrics?

 Not yet — every condition compares one metric to a constant.

## Related

- Alert Rules builder overview

- Alert rule routing and suppression

- API endpoint degradation


## Related

- [Help centre](https://lemwatch.com/help)
- [How does the Alert Rules builder work?](https://lemwatch.com/help/alert-rules-builder-overview)
- [How do I route and suppress alerts from a rule?](https://lemwatch.com/help/alert-rule-routing-and-suppression)
- [How does API endpoint degradation alerting work?](https://lemwatch.com/help/api-endpoint-degradation)
- [Quick Start Guide](https://lemwatch.com/help/quick-start-guide)
- [Lemwatch pricing](https://lemwatch.com/pricing)
- [Alert Routing Rules](https://lemwatch.com/help/alert-routing)