Vibe Coder’s Manual

SaaS Metrics That Matter: Activation, Churn, Agentic Margins

42 min · 7. Apr. 2026
Episode SaaS Metrics That Matter: Activation, Churn, Agentic Margins Cover

Beschreibung

SaaS metrics that matter are five numbers - not pageviews, not signups. This episode is the instrumentation guide: the exact Supabase schema for tracking AI costs per user, the Stripe Sigma queries, the PostHog event setup, and the alert thresholds that tell you something is wrong before it becomes a crisis. Covers activation rate, time-to-value, NRR, MRR churn, and agentic margins - with real benchmarks so you know what good actually looks like.

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Episode AI Customer Support at Scale: Tiered Architecture for Solo Founders Cover

AI Customer Support at Scale: Tiered Architecture for Solo Founders

AI customer support isn't a tool decision — it's an architectural decision. This episode starts with the support volume paradox (support doesn't scale linearly past 1,000 users, it explodes logarithmically due to combinatorial environment variance), then dismantles the Human Touch Theater Trap: founders spending 25–55% of their week manually answering tickets at an industry average cost of $19 per ticket, while a poor support interaction makes users 50% more likely to churn within 6 months. The full four-tier architecture with exact cost-per-resolution math: Tier 0 self-service docs at under $0.01, Tier 1 agentic AI at $0.50–$1.50 resolving 40–92% of tickets, Tier 2 contractor layer at $15–$25, Tier 3 founder escalation at $150+. Then the head-to-head cost math: Intercom Fin at $534/month for 500 tickets vs custom Supabase + Claude Haiku build at $26.50/month — scaling to $4,989 vs $40 at 5,000 tickets, with break-even on your 20 engineering hours at 8 months. Deep RAG engineering: LlamaParse vision-based ingestion for complex PDFs, fixed-size vs semantic vs late chunking (semantic improves retrieval recall by 9%), AWS flat-level syntax rules for machine-readable docs, and cosine similarity threshold tuning. Thomas Wiggled's Agent Tiny triage system: Claude Haiku classification at $0.01–$0.05 per ticket with forced JSON output (priority, category, reasoning). The contextual handoff protocol that eliminates "explain your problem again." And the Sunday midnight cron workflow that turns 500 resolved tickets into a friction-scored, auto-prioritized Linear roadmap for under 10 cents in API tokens.

30. März 202651 min