Crawl a site, find every 404 internal link, 301 chain, and stale slug. Outputs a ready-to-paste sed script that auto-rewrites all broken refs across your source tree. Companion tool to Link Graph — deeper on link quality, less on topology.
<a href>, probes each destination for upstream status (via Netlify proxy), and flags any 4xx / 3xx. For every broken destination, it proposes a canonical replacement and emits a sed patch you can run against your source tree.