Best Practices - View Your Pattern Library

Display your aggregated best practices library, showing successful patterns and anti-patterns across all projects.

When to Use

• Reviewing what patterns worked well
• Checking for known anti-patterns
• Getting statistics on your practices
• Before implementing a pattern to check history

Usage

/best-practices                     # Show full library
/best-practices <category>          # Filter by category
/best-practices --warnings          # Show only anti-patterns
/best-practices --successes         # Show only successes
/best-practices --stats             # Show statistics only

Options

• <category> - Filter by specific category (pagination, database, authentication, etc.)
• --warnings - Show only anti-patterns (failed patterns)
• --successes - Show only successful patterns
• --stats - Show statistics summary without individual patterns

Workflow

1. Query mem0 for Best Practices

Use mcp__mem0__search_memories with:

{
  "query": "patterns outcomes",
  "filters": {
    "OR": [
      { "metadata.outcome": "success" },
      { "metadata.outcome": "failed" }
    ]
  },
  "limit": 100
}

2. Aggregate Results

Group patterns by category, then by outcome:

{
  "pagination": {
    "successes": [...],
    "failures": [...]
  },
  "authentication": {
    "successes": [...],
    "failures": [...]
  }
}

3. Calculate Statistics

For each pattern:

• Count occurrences across projects
• Calculate success rate: successes / (successes + failures)
• Note which projects contributed

4. Display Output

Full Library View:

📚 Your Best Practices Library
═══════════════════════════════════════════════════════════════

PAGINATION
─────────────────────────────────────────────────────────────
  ✅ Cursor-based pagination (3 projects, always worked)
     "Scales well for large datasets"

  ❌ Offset pagination (failed in 2 projects)
     "Caused timeouts on tables with 1M+ rows"
     💡 Lesson: Use cursor-based for large datasets

AUTHENTICATION
─────────────────────────────────────────────────────────────
  ✅ JWT + httpOnly refresh tokens (4 projects)
     "Secure and scalable for web apps"

  ⚠️ Session-based auth (mixed: 1 success, 1 failure)
     "Works but scaling issues in high-traffic scenarios"

───────────────────────────────────────────────────────────────
📊 Summary: 8 patterns | 5 ✅ successes | 3 ❌ anti-patterns
💡 Use `/remember --success` or `/remember --failed` to add more

Stats Only View (--stats):

📊 Best Practices Statistics
═══════════════════════════════════════════════════════════════

Total Patterns: 15
├── ✅ Successful: 10 (67%)
├── ❌ Anti-patterns: 5 (33%)
└── ⚠️ Mixed: 2

Categories:
├── pagination: 3 patterns (2 ✅, 1 ❌)
├── authentication: 4 patterns (3 ✅, 1 ⚠️)
├── database: 5 patterns (4 ✅, 1 ❌)
└── api: 3 patterns (1 ✅, 2 ❌)

Projects Contributing: 7
Last Updated: 2 days ago

Filtered View (by category):

📚 Best Practices: PAGINATION
═══════════════════════════════════════════════════════════════

  ✅ Cursor-based pagination (3 projects, always worked)
     "Scales well for large datasets"
     Projects: project-a, project-b, project-c

  ❌ Offset pagination (failed in 2 projects)
     "Caused timeouts on tables with 1M+ rows"
     💡 Lesson: Use cursor-based for large datasets
     Projects: project-a, project-d

Pattern Confidence Indicators

Icon	Meaning
✅	Strong success (3+ projects, 100% success rate)
✓	Moderate success (1-2 projects or some failures)
⚠️	Mixed results (both successes and failures)
❌	Anti-pattern (only failures)
🔴	Strong anti-pattern (3+ projects, all failed)

Empty Library

📚 Your Best Practices Library is empty

Start building it with:
• /remember --success "Pattern that worked well"
• /remember --failed "Pattern that caused problems"

Your patterns will be tracked across all projects and help
Claude warn you before repeating past mistakes.

Proactive Integration

See references/proactive-warnings.md for automatic anti-pattern detection.

Related Skills

• code-review-playbook: Review best practices
• api-design-framework: API design best practices
• testing-strategy: Testing best practices
• security-hardening: Security best practices

Related Commands

• /remember --success <text> - Add a successful pattern
• /remember --failed <text> - Add an anti-pattern
• /recall <query> - Search all memories (not just best practices)