Your AI Agent Says Done — How Do You Know It Actually Worked?

Your AI coding agent just finished a task. It says "Done!" in the terminal. The code looks reasonable at a glance. Do you merge it? If you're like 52% of developers, you do — without running a single test. Here's why that's a problem, and a zero-cost fix that takes five minutes to set up. The "Almost Right" Problem AI coding agents are optimized to produce plausible-looking code. They'll generate something that reads correctly, passes a quick glance, and introduces a subtle bug you won't catch until production. The numbers are sobering: CodeRabbit's analysis: AI-generated code contains 1.7x more bugs than human-written code Sonar's 2026 State of Code survey: 96% of developers distrust AI-generated code The gap: Only 48% verify before committing — a 48-point "verification debt zone" The worst bugs aren't the obvious ones. Compilation errors are easy. The "almost right" bugs — the ones that pass a quick read but fail on edge cases, skip null checks, or miss error handling — those waste h