# Quality Metrics

Tracks quality metrics including defect density, test effectiveness ratio, DORA...

- Repository: https://github.com/proffesor-for-testing/agentic-qe (521 stars)
- Category: Testing
- License: MIT
- Last updated: 2026-11-01
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add proffesor-for-testing/agentic-qe --skill quality-metrics -g -a claude-code -y`
Codex: `npx skills add proffesor-for-testing/agentic-qe --skill quality-metrics -g -a codex -y`
Cursor: `npx skills add proffesor-for-testing/agentic-qe --skill quality-metrics -g -a cursor -y`
Gemini CLI: `npx skills add proffesor-for-testing/agentic-qe --skill quality-metrics -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add proffesor-for-testing/agentic-qe`

## Description

Tracks quality metrics including defect density, test effectiveness ratio, DORA metrics, and mean time to detection. Use when establishing quality dashboards, defining KPIs, evaluating test suite effectiveness, or reporting quality trends to stakeholders.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Quality Metrics

<default_to_action>
When measuring quality or building dashboards:
1. MEASURE outcomes (bug escape rate, MTTD) not activities (test count)
2. AVOID vanity metrics: 100% coverage means nothing if tests don't catch bugs
3. SET thresholds that drive behavior (quality gates block bad code)
4. TREND over time: Direction matters more than absolute numbers
</default_to_action>

## Quick Reference Card

### When to Use
- Building quality dashboards
- Defining quality gates
- Evaluating testing effectiveness
- Justifying quality investments

### Quality Gate Thresholds
| Metric | Blocking Threshold | Warning |
|--------|-------------------|---------|
| Test pass rate | 100% | - |
| Critical coverage | > 80% | > 70% |
| Security critical | 0 | - |
| Performance p95 | < 200ms | < 500ms |
| Flaky tests | < 2% | < 5% |

---

## Dashboard Design

```typescript
// Agent generates quality dashboard
await Task("Generate Dashboard", {
  metrics: {
    delivery: ['deployment-frequency', 'lead-time', 'change-failure-rate'],
    quality: ['bug-escape-rate', 'test-effectiveness', 'defect-density'],
    stability: ['mttd', 'mttr', 'availability'],
    process: ['code-review-time', 'flaky-test-rate', 'coverage-trend']
  },
  visualization: 'grafana',
  alerts: {
    critical: { bug_escape_rate: '>20%', mttr: '>24h' },
    warning: { coverage: '<70%', flaky_rate: '>5%' }
  }
}, "qe-quality-analyzer");
```

---

## Quality Gate Configuration

The rest: https://github.com/proffesor-for-testing/agentic-qe/blob/HEAD/.claude/skills/quality-metrics/SKILL.md