testland/non-functional-requirement-extractor
Reads a PRD, design doc, or product brief and pulls out the non-functional requirements (performance, accessibility, security, internationalization, reliability, observability) as concrete, threshold-bound, testable assertions. Maps every NFR to its measurement source (Lighthouse, axe, OWASP ASVS, WCAG criterion, etc.) so the test suite knows what to assert against. Use after acceptance-criteria-extractor handles functional requirements.
75
94%
Does it follow best practices?
Run evals on this skill
Adds up to 20 points to the overall score
View guide
Passed
No findings from the security scan
measurement-sources.mdreferences/
Canonical NFR measurement sources
Each extracted NFR must name how it is measured. Look up the canonical source for its family below. Tool and standard names are load-bearing - the test report back-references them.
Performance
| Metric | Source |
|---|---|
| LCP (Largest Contentful Paint) | Web Vitals (Google) - page-load perception |
| INP (Interaction to Next Paint) | Web Vitals - replaces FID since March 2024 |
| CLS (Cumulative Layout Shift) | Web Vitals |
| p95 / p99 latency | k6 / JMeter / Gatling / load-test runner |
| Throughput | Same load-test runners |
Web Vitals canonical thresholds: LCP ≤2.5s, INP ≤200ms, CLS ≤0.1.
Accessibility
| Standard | Source |
|---|---|
| WCAG 2.2 AA / AAA | https://www.w3.org/TR/WCAG22/ |
| ARIA practices | https://www.w3.org/WAI/ARIA/apg/ |
| Tools | axe-core, pa11y, Lighthouse a11y, IBM Equal Access, WAVE |
Per-criterion citations use the WCAG SC ID format
(WCAG 2.2 SC 1.4.3 Contrast (Minimum)) so the test report
back-references the standard.
Security
| Standard | Source |
|---|---|
| OWASP Top 10 | https://owasp.org/www-project-top-ten/ |
| OWASP ASVS | https://owasp.org/www-project-application-security-verification-standard/ |
| CWE | https://cwe.mitre.org/ |
| Tools | ZAP / Burp / Snyk / Trivy / Semgrep |
Compatibility
| Source |
|---|
| MDN browser-compat-data (https://github.com/mdn/browser-compat-data) |
| Can I use (https://caniuse.com/) |
| Per-team analytics (real device share) |
Reliability
| Concept | Source |
|---|---|
| SLO / SLA / SLI | Google SRE Workbook (free at sre.google/workbook) |
| Error budgets | Same |
| Chaos engineering principles | https://principlesofchaos.org/ |
Internationalization
| Source |
|---|
| W3C i18n Web FAQ (https://www.w3.org/International/) |
| Unicode CLDR (https://cldr.unicode.org/) |
| ICU MessageFormat |