Why this workflow exists
Most code review time is spent loading context: opening the PR, scrolling the diff, jumping to related files, scanning the description. The actual judgment — is this change safe? — takes a few minutes. GitHub MCP collapses the loading time so you can spend the budget on judgment.
What success looks like
You paste a PR reference into Claude. You read a structured review with the top risks called out. You ask one or two follow-ups. You leave a comment on the PR. Total: ~10 minutes per review.