Site Reliability Engineer

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:

• Liquid syntax - Scans for double-brace templates outside code blocks
• Angle brackets - Finds <digit patterns
• SkillHeader props - Validates component usage
• 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)