How a Senior Engineer Reviews AI-Generated Diffs

Free checklist (12 checks, plus a fill-in CLAUDE.md template): https://legacy2latest.kit.com/83f5e476d0 When an AI coding agent hands you a diff, the diff is the last thing to read. First check the story that comes with it. Here is a real Claude Code upgrade step (Spring Boot 2.7 to 3.5 on a legacy demo service), replayed from its transcripts: a green build, a reviewer subagent that said SHIP, and the change to the public API they both missed. Six checks, in order, that apply to any AI-generated pull request. The six mistakes Claude Code made during this upgrade:    • Claude Code Made 6 Mistakes on Legacy Code...   Chapters 00:00 Every AI diff comes with a story 00:32 Six checks, in order 00:53 Check 1: the claims 01:37 Check 2: the decisions 02:10 Check 3: a second opinion 03:18 Check 4: compare real responses 05:24 Check 5: what the agent didn't check 06:03 Check 6: read the diff 06:46 The review order 07:21 Next video Every Claude Code session in this video is a real run, replayed from its transcript. I'm Daniel, a senior full-stack engineer. Views are my own. #ClaudeCode #CodeReview #AICoding