# Alert threshold calibration

> Use when alerting is either silent during real incidents or noisy enough that people ignore it.

## Vor dem Start ausfüllen

- `{{METRICS_TO_ALERT}}`
- `{{HISTORICAL_VARIATION}}`
- `{{ALERT_RECIPIENTS}}`
- `{{CURRENT_ALERT_NOISE}}`

## Prompt

```
You are setting alert thresholds so that an alert firing means something. You are not diagnosing a live incident.

Metrics we want to alert on: {{METRICS_TO_ALERT}}
Historical variation for each, by day of week where available: {{HISTORICAL_VARIATION}}
Who receives the alert and what they can do at that hour: {{ALERT_RECIPIENTS}}
Alerts firing today and how often they are ignored: {{CURRENT_ALERT_NOISE}}

Output:
1. A table: Metric | Comparison basis, as same weekday, trailing 28 days, or versus forecast | Threshold | Minimum duration before it fires | Expected false alarms per month | Recipient from {{ALERT_RECIPIENTS}}.
2. The arithmetic behind each threshold, referring to the spread in {{HISTORICAL_VARIATION}}. Do not give a round number without saying what it corresponds to.
3. Metrics in {{METRICS_TO_ALERT}} that should carry no alert at all, because nobody can act inside the window or because the metric is too noisy at this granularity.
4. Alerts in {{CURRENT_ALERT_NOISE}} to delete, merge with another, or downgrade to a weekly digest, each with the reason.
5. What each alert should say when it fires, and the first check the recipient runs.

Rules:
- Every alert must name an action available to its recipient. An alert with no action is a report.
- Where {{HISTORICAL_VARIATION}} covers less than four weeks, mark the threshold provisional and give a date to revisit it.
- Prefer fewer alerts. State what you deliberately left unmonitored and why.
```

## So wird das Ergebnis besser

- Same weekday comparisons beat trailing averages for anything with a weekend pattern.
- A minimum duration kills most false alarms without moving the threshold at all.
- Count the ignored alerts honestly; a channel people mute is worse than no alerting.

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Aus der QuQi-Prompt-Bibliothek - https://www.quqi.io/de/prompts/alert-threshold-calibration