This extracts learnings from debugging sessions, failed attempts, and solved problems so they don't disappear when the conversation ends. It structures insights into three buckets: discoveries (bugs and root causes), patterns (reusable solutions), and agent recommendations (workflows you've repeated enough times that automation makes sense). The skill hooks into Kuzu memory backend and suggests updates to PATTERNS.md. Honestly most valuable after you've spent 45 minutes debugging something obscure, since it forces you to write down what actually went wrong and why, which is the stuff you'll forget in two weeks but desperately need when the issue resurfaces.
npx skills add https://github.com/rysweet/amplihack --skill knowledge-extractor