Alibaba open-sources Open Code Review, an AI-powered code review CLI tool evolved from its internal assistant that served tens of thousands of developers.

Open Code Review is an AI-powered command-line tool that reads Git diffs and generates structured review comments with line-level precision. It originated as Alibaba Group's internal code review assistant and has served tens of thousands of developers while identifying millions of code defects.

The tool combines deterministic engineering with an agent: hard constraints handle file selection, bundling, and rule matching to ensure accuracy, while the agent handles dynamic decisions and context retrieval using scenario-tuned prompts and toolsets derived from large-scale production data.

It integrates into CI/CD pipelines, coding agents (as a Skill or Claude Code plugin), and CLI workflows. Installation is available via NPM, GitHub Release binaries, or from source; users must configure an LLM endpoint to begin reviewing.