---

name: site-reliability-engineer description: Docusaurus build health validation and deployment safety for Claude Skills showcase. Pre-commit MDX validation (Liquid syntax, angle brackets, prop mismatches), pre-build link checking, post-build health reports. Activate on 'build errors', 'commit hooks', 'deployment safety', 'site health', 'MDX validation'. NOT for general DevOps (use deployment-engineer), Kubernetes/cloud infrastructure (use kubernetes-architect), runtime monitoring (use observability-engineer), or non-Docusaurus projects. allowed-tools: Read,Write,Edit,Bash,Grep,Glob category: DevOps & Site Reliability tags:

• docusaurus
• build-health
• mdx
• validation
• deployment pairs-with:
• skill: devops-automator reason: CI/CD for site deployments
• skill: skill-documentarian reason: Maintain skill documentation quality

---

Site Reliability Engineer

Expert in Docusaurus build health, MDX validation, and deployment safety for the Claude Skills showcase website. Prevents common build failures through pre-commit validation and automated health checks.

When to Use

Use for:

• Pre-commit validation of markdown/MDX files
• Catching Liquid template syntax errors
• Validating SkillHeader component props
• Checking for missing hero images/ZIP files
• Pre-build link validation
• Post-build health reports
• Diagnosing Docusaurus build failures

Do NOT use for:

• General DevOps (use deployment-engineer)
• Kubernetes/cloud infrastructure (use kubernetes-architect)
• Runtime monitoring/alerting (use observability-engineer)
• Database migrations (use database-migrations agents)
• Security scanning (use security-auditor)

Core Problem Domain

The 5 Recurring Anti-Patterns

#	Problem	Symptom	Fix
1	Liquid syntax in examples	Liquid templates break MDX	Wrap in backtick expression
2	Unescaped angle brackets	<70 parsed as HTML	Use <70
3	Wrong SkillHeader props	SSG build failure	Use fileName not skillId
4	Missing critical files	Skill invisible on site	Add to skills.ts
5	Cache corruption	Phantom errors	Clear .docusaurus, build

Quick Start

Install Hooks (One-Time)

npm run install-hooks

Manual Validation

npm run validate:liquid    # Liquid syntax
npm run validate:brackets  # Angle brackets
npm run validate:props     # SkillHeader props
npm run validate:all       # All checks

Clear Cache (When Stuck)

rm -rf .docusaurus build node_modules/.cache
npm run build

Pre-Commit Validation

The pre-commit hook automatically:

1. Liquid syntax - Scans for double-brace templates outside code blocks
2. Angle brackets - Finds <digit patterns
3. SkillHeader props - Validates component usage
4. Required files - Checks hero images, ZIPs exist

Speed: Under 5 seconds for typical commits

Expert vs Novice Approach

Novice	Expert
Runs full build to check	Pre-commit catches 90% in 5 seconds
Manual cache clearing	Auto-detect cache issues
Ignores warnings	Zero-tolerance for broken links
Simple regex validation	Context-aware (skips code blocks)

Anti-Patterns

Anti-Pattern: Full Build for Validation

What it looks like: npm run build to check for errors Why wrong: Minutes vs seconds, slow feedback Instead: npm run validate:all (under 30 seconds)

Anti-Pattern: Ignoring Build Warnings

What it looks like: "Build succeeded, ship it!" (ignoring warnings) Why wrong: Broken links = poor UX, tech debt Instead: Post-build validation fails on warnings

Anti-Pattern: Naive Regex Validation

What it looks like: /\{\{.*?\}\}/ (matches in code blocks too) Why wrong: False positives in code examples Instead: Track code block state, skip protected regions

Scripts (in scripts/ folder)

Script	Purpose
validate-liquid.js	Detect unescaped Liquid syntax
validate-brackets.js	Detect unescaped angle brackets
validate-skill-props.js	Validate SkillHeader component

Troubleshooting Quick Reference

Issue	Diagnosis	Fix
Hook not running	ls -la .git/hooks/pre-commit	chmod +x or reinstall
False positives	Pattern in code block	Check ``` markers
Slow validation	time npm run validate:all	Optimize glob patterns

Success Metrics

After installing hooks:

• Build failure rate: 15% → under 2%
• Time to diagnose errors: 10 min → under 1 min
• Validation speed: Under 30 seconds

Reference Files

• references/validation-logic.md - Context-aware detection patterns
• references/ci-cd-integration.md - GitHub Actions, health reports
• scripts/ - Working validation scripts

---

Prevents: Liquid errors | Angle bracket failures | Prop mismatches | Missing assets | Broken links

Use with: skill-documentarian (sync) | docusaurus-expert (advanced config)