Local deterministic memory and safety kernel for AI agents. Replaces vector RAG with STRATA, a cryptographically signed, append-only ledger, so every agent state carries proof. Uses causal_walk engine to trace execution failures back to their root cause, and Operator Lite to block destructive terminal terminal commands before they ever run

🌳 AI-Powered Skill Tree for Lifelong Human Learning. 30+ skills from K-12 to career & social intelligence, built on cognitive science. | 人类养成记：AI 驱动的终身学习技能树

Create and study EngrAmo spaced-repetition flashcards from your AI client.

Flashcards, multiple-choice quizzes, mind maps and spaced-repetition reviews from your study notes.

Create and review spaced-repetition flashcards in your free Klappa decks from any AI assistant.