session-analysis-patterns

Agent Building

Claude Code session analysis, tool call patterns, efficiency metrics, and anti-pattern detection

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Source SKILL.md: https://github.com/vibeeval/vibecosystem/blob/HEAD/skills/session-analysis-patterns/SKILL.md

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Session Analysis Patterns

Session Metrics

Metrik	İyi	Orta	Kötü
Tokens per task	<50K	50-100K	>100K
Tool calls per task	<20	20-40	>40
Repeated reads	0-1	2-3	>3
Blind edits	0	1	>1
Agent spawn efficiency	>80% useful	50-80%	<50%

Anti-Pattern Catalog

#	Pattern	Tespit	Fix
1	Repeated Read	Aynı dosya 3+ kez okunmuş	Bilgiyi ilk seferde kaydet
2	Wide Grep	Pattern'siz geniş arama	Spesifik pattern + glob filter
3	Blind Edit	Dosya okumadan edit	Read → Edit sırası zorunlu
4	Idle Agent	Agent spawn edilip sonuç kullanılmamış	Gereksiz spawn etme
5	Cascade Fail	Aynı hata 3+ kez retry	Root cause analiz et
6	Context Pollution	Ana context'te gereksiz büyük dosya okuma	Agent'a delege et
7	Premature Agent	Basit iş için agent spawn	Direkt tool kullan
8	Missing Parallel	Bağımsız işler sıralı	Paralel agent/tool call
9	Over-Engineering	Basit fix için büyük refactoring	Minimal değişiklik

Efficiency Scorer (0-100)

def calculate_efficiency(session):
    score = 100

    # Penalties
    score -= session.repeated_reads * 5       # -5 per repeated read
    score -= session.blind_edits * 15         # -15 per blind edit
    score -= session.wide_greps * 3           # -3 per wide grep
    score -= session.idle_agents * 10         # -10 per idle agent
    score -= session.cascade_fails * 8        # -8 per cascade fail

    # Bonuses
    score += session.parallel_calls * 2       # +2 per parallel batch
    score += session.first_pass_success * 5   # +5 per first-try success

    return max(0, min(100, score))

Session Comparison

| Metrik | Session A | Session B | Delta |
|--------|-----------|-----------|-------|
| Total tokens | 45,000 | 120,000 | +167% |
| Tool calls | 12 | 38 | +217% |
| Time (min) | 3 | 12 | +300% |
| Tasks completed | 2 | 2 | 0% |
| Efficiency score | 88 | 42 | -52% |

Braintrust Log Analysis

# Session analizi
btca sessions list --last 7d
btca session <id> --metrics

# Pattern detection
btca session <id> --anti-patterns

# Cost analysis
btca sessions list --sort cost --desc

Checklist

Anti-Patterns

Her session'ı analiz etmek (sadece outlier'ları analiz et)
Metric'lere takılıp task quality'yi ihmal etmek
Hız için correctness'tan ödün vermek