# slo-tracker

Minimal CLI for tracking SLO burn rates from Prometheus.
Outputs a quick summary to stdout — useful for morning standups and incident reviews.

Built for my own use. Tested on the Nexus prod setup.

## Usage

    python slo_tracker.py --config slos.yml --window 7d

## Config format

    slos:
      - name: "API availability"
        query: 'sum(rate(http_requests_total{code!~"5.."}[5m])) / sum(rate(http_requests_total[5m]))'
        target: 0.999
        window: 30d

## Requirements

    pip install prometheus-api-client pyyaml rich


## Burn rate

The `burn_rate()` helper calculates how quickly you're spending your error budget
relative to a 30-day window. A burn rate > 1 means you'll exhaust the budget before the window closes.