[AI in Practice] Claude in Action: Automating PR Reviews on kt cloud VM

PR reviews are central to collaborative development, yet bottlenecks frequently occur due to reviewer dependency and quality variance. To address these issues, the kt cloud FE Development Team directly built a Claude-based PR review bot within the kt cloud VM environment.

The core design principle was to limit AI to the role of explaining rule-based results without making judgments. Humans define the criteria, validation logic is handled by explicit rules, and AI is responsible only for explaining the final results. This separation of roles ensured reproducibility and established a reliable review structure that minimizes AI hallucinations.

Previously, the absence of PR review features in Claude and the difficulty of adopting GitHub Copilot necessitated building the system in-house. This approach reduces the burden of repetitive validation, alleviates bottlenecks concentrated on senior reviewers, and accelerates onboarding for new team members.