repolens

repolens is a tool designed to analyze GitHub repositories by generating interactive architecture maps directly in the browser or via a command-line interface. Users can paste the URL of any public GitHub repository to receive a comprehensive, interactive report that includes a dependency graph, blast radius analysis, health grading, security scanning, and identification of code hotspots. The platform enables exploration of repository structure through a force-directed dependency graph, where files are visualized as nodes and can be colored by folder, layer, code churn, or blast radius. Selecting a node reveals details such as imports, dependents, defined functions, and code owners. Blast radius analysis helps determine the potential impact of changes to specific files, showing which other files are affected and providing a severity meter for each. The health grade feature evaluates the codebase on factors like cycles, coupling, oversized files, and security findings, with a transparent breakdown of penalties rather than a single opaque score. Security scanning checks for issues such as committed keys and tokens, SQL queries built with string concatenation, usage of eval or exec, and disabled TLS verification, while automatically demoting test paths from critical findings. Hotspots and ownership information are derived from git history, highlighting files with high commit churn and identifying top contributors for each file. The generated report is a self-contained HTML file that does not make external requests, allowing users to save, share, or attach it to pull requests. The browser-based service is free to use, requires no signup, and supports public repositories with up to 3,000 files per analysis. Snapshots are processed in memory, with no data stored beyond a 24-hour cache. For those preferring local analysis or needing to work with larger or private repositories, repolens offers an open-source CLI that removes size and rate limits and ensures code never leaves the user's machine. The tool is released under the MIT license and is identified as a product of bigwinner.work. repolens is inspired by CodeFlow but does not require integration with any specific service.