Thu, July 904:03Tools

Kenton Varda Bans AI-Written Change Descriptions

Decision Brief

What changedKenton Varda prohibits his team from using AI to write PR and commit messages, citing lack of high-level context and poor review usefulness.

Why it mattersTeams using AI like Claude API for change descriptions risk inefficient code reviews because AI focuses on code details rather than overall intent.

Who should careAI coding tool users

Affected stackNo specific stack identified

Source confidenceMedium · Reliable media or first-hand reporting

Kenton Varda (creator of Cap'n Proto and Sandstorm) announced on social media he banned his team from using AI to write change descriptions, including PR messages, commit messages, and issue/ticket descriptions. He found AI-generated descriptions "worse than useless" during PR review: they list obvious code details but omit the high-level framework needed to understand the code's purpose. For development teams relying on AI coding tools, this ban highlights that AI text often stays at the code surface, lacking deep analysis of change motivation and impact. Teams should ensure descriptions provide sufficient context for reviewers to quickly grasp the essence of changes.

Summary basis: official / RSS sourceCompiled from the source scope noted above; the original remains authoritative.

Sources

Simon Willison：Blog
Hands-on notes on LLM tools, local models, and practical AI engineering.
Simon Willison：Blog

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