05
Field Notes
Case studies, frameworks, demos, and tools from the field. Each one standalone and shareable.
All Case Studies Frameworks Patterns Demos Tools
> Case Study
When Cursor Deleted the Codebase
A documented production failure and what it tells us about agent supervision boundaries.
> Case Study
Replit's Database Wipe
An agent autonomously deleted a production database. The failure chain and what guardrails were missing.
> Case Study
The Moonwell Oracle Bug
Agent-generated code shipped a price oracle vulnerability to a DeFi protocol.
> Case Study
Klarna's AI Reversal
From "AI replaces 700 workers" to rehiring. What happened.
> Framework
The 80/20 Trap
Why the last 20% of agent-assisted work takes 80% of the time, and how to plan for it.
> Pattern
Specification-Driven Development
Writing specs before prompts. The single highest-leverage practice for reliable agentic output.
> Framework
The Feedback Loop Hierarchy
Linters, tests, types, review. Which feedback loops matter most for agent output quality.
> Failure Mode
Context Rot
When the agent's working memory degrades mid-task. How to detect it and what to do.