Bello Code Reviewer is an open-source Chrome extension designed to enhance the code review process on GitHub and GitLab. By adding a side panel to pull and merge requests, it allows users to generate AI-assisted code reviews quickly and efficiently. The extension supports various large language model (LLM) providers, including OpenAI and Anthropic, giving developers flexibility in choosing their preferred AI engine. Users can select specific files for analysis and receive structured summaries along with line-level findings that include severity ratings and actionable suggestions.

With features like a customizable focus prompt for each review and the ability to filter results based on severity, Bello Code Reviewer caters to diverse coding needs. The extension prioritizes user privacy, with settings stored locally and minimal usage metrics collected. This makes it a practical tool for developers seeking to optimize their code review workflow without compromising data security.