The most common errors when building apps with Claude
Seven mistakes we see repeatedly in production Claude apps. Some cost you tokens, some cost you money, one or two can cost you the company. Each one has a simple fix.
Read the pieceField notes on AI-native products, design systems, web engineering, SaaS economics and modern infrastructure. New articles every week, sources included.
Seven mistakes we see repeatedly in production Claude apps. Some cost you tokens, some cost you money, one or two can cost you the company. Each one has a simple fix.
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Dark mode adoption hit 82% on mobile in 2025, but a header toggle still ignores ambient light, time of day, and task. Here is the fix.
Multi-agent systems cost 15 times more than chat. 40% of pilots fail in 6 months. Five design patterns decide if your AI agent team ships or stalls.
RLS slows queries 2x to 11x on large tables when policies skip the SELECT wrapper, miss indexes, or hide joins. Here are 7 patterns that fix it.
Production sites decay after handover. Dependencies drift, certificates expire, Web Vitals slide. Why six months is the breakpoint, and how to prevent it.
Edge wins on cold start and global latency. Node wins on libraries, duration, and database work. The decision is not binary, and most production SaaS use both.
The EAA became enforceable on 28 June 2025. Here is what changes for product teams shipping to the EU and what accessibility-first design actually means.
How to wire Claude Code hooks for security gates, format-on-save, and team-wide guardrails without slowing the agent down.
Since 1 July 2025, every new Cloudflare domain blocks GPTBot, ClaudeBot, PerplexityBot and friends. Here is how to selectively allow the ones that cite you.
Single-tenant feels safer at launch, then becomes a 6 to 12 month re-architecture between customer 200 and 500. Pool by default, silo as a paid tier.
After years of running Tailwind alongside our own design system, we removed it from production. Here is the architecture that replaced it and what changed.
Calm UI keeps interface motion in the user's periphery, animates only when state changes carry meaning, and treats animation as a cost not a default.
What separates AI-native products from retrofits: the architecture, the data flow, the team shape. Plus a 60-second test you can run on any product.
Pieces for designers and engineers doing the work.
Pieces for founders and teams picking a partner.