Open Code Review – AI-based Code Review CLI Tool

Open Code Review is an AI-based code review CLI tool validated through Alibaba Group's internal development process. Based on the experience of being used by tens of thousands of developers over the past 2 years and identifying millions of code defects, it has been made open source.

It reads Git diffs and analyzes changed files through an LLM agent equipped with tool-use capabilities. Rather than simply looking at diffs, it performs precise reviews by reading entire file contents, searching the codebase, and grasping the context of other changed files.

To address the limitations of existing general-purpose agents—incomplete coverage, position drift, and unstable quality—it adopts a hybrid design combining Deterministic Engineering and Agent.

• Deterministic Engineering: Steps where accuracy is essential, such as file selection, smart file bundling, and fine-grained rule matching, are controlled by engineering logic to ensure stability.
• Agent utilization: The agent's reasoning capabilities are leveraged for complex context understanding and in-depth review stages.