TimeMachine

TimeMachine is a developer intelligence platform that transforms raw Git history into meaningful, human-readable narratives. Instead of simply showing commits or blame logs, it reconstructs the evolution of individual functions and explains how and why code changed over time. Users can input any public GitHub repository, and TimeMachine automatically clones the repo, analyzes the codebase across multiple programming languages, and extracts functions using language-aware parsing. It then builds a timeline of changes for each function by tracking line-level Git history. On top of this structural analysis, TimeMachine generates AI-powered narratives that summarize the lifecycle of each function—highlighting bug fixes, feature additions, refactors, and security changes. If AI services are unavailable, the system gracefully falls back to deterministic summaries derived directly from commit history, ensuring reliability. The platform supports multiple languages including JavaScript, Python, Java, Go, and more, making it suitable for modern polyglot codebases. TimeMachine is built with IBM Bob IDE as a development assistant and integrates IBM watsonx.ai for natural language generation. It demonstrates how AI can enhance developer workflows by turning complex version control data into clear engineering insights. The result is a powerful “Git archaeology” tool that helps developers understand not just what changed in code—but why it changed.