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How the Claude Code Team Does Code Review

A reading note on Anthropic’s October 2026 account of risk-based review: executable checks, human responsibility, bounded review rounds and recovery.

Original author: Addy Osmani, Morgan Westlee Lunt, and Qing Wang
Source: claude.dev · Anthropic Engineering

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Why this is worth reading

The October 15 article describes how the Claude Code team allocates review effort as agent-written changes increase. It asks which check can catch a change's likely failure, instead of using the presence of a human reader as the only quality signal. These are the authors' team practices, not Boloop's measured results or a universal approval policy.

Diagram from the original article: choose the module you need to understand, then use an explanation or visualization to learn it. Reading every small diff is not the same as understanding the module. Credit: the original claude.dev authors.
Diagram from the original article: choose the module you need to understand, then use an explanation or visualization to learn it. Reading every small diff is not the same as understanding the module. Credit: the original claude.dev authors. Image source

Read it alongside the operating guidance

The public best-practices guide makes executable feedback concrete: a test, build or screenshot gives an agent something it can inspect and correct. The public Code Review documentation describes automated findings; that is a different responsibility from granting human approval. Read those documents before assuming that an AI reviewer can approve your organization's sensitive changes.

Official Claude team conversation (September 2, 2026). Chapters: 08:52, how code review inspired dynamic workflows; 14:04, verification and feedback loops. Related background, not a narration of the October article. We have not watched the full video.Clicking connects to the video platform. Its privacy policy applies. Watch on the original site · SourceIf playback is unavailable, use the original link.

A small exercise for your next change

Choose one reversible change. Write its observable success condition and which failure your tests would miss. Keep the output from a real run, then ask a reviewer to look for a specific remaining risk. Record whether each finding was fixed, disproved or deferred with a reason. This is Boloop's suggested reading exercise, not an experiment we have run on the reader's project.

Keep the boundaries visible

The article also discusses repeated review and recovery. Use it to question unbounded review loops, not to justify skipping checks. Simon Willison independently linked the original on October 16; that verifies a discovery trail, not the team's causal claims. The reported improvements come from one organization with its own tooling. Small teams should keep ownership, required human decisions and rollback explicit, and measure their own outcomes before relaxing gates.

Sources and further reading

  1. How the Claude Code team does code reviewArticle · Addy Osmani, Morgan Westlee Lunt, and Qing Wang
  2. Best practices for Claude Code: executable verificationOfficial documentation · Anthropic
  3. Code Review: product documentationOfficial documentation · Anthropic
  4. Independent discovery link, October 16, 2026Review · Simon Willison