Evidence-based learning engine — first-principles curricula, free-recall verification with receipts, FSRS-scheduled memory, and explorable artifacts. Learn anything; keep it.

你的AI学习搭档：定路线、讲知识、做项目，边学边做，学透一门科目

StudyHub: a DeepSeek Harness (DSH) plugin that turns your own material into questions and spaced review · 把自己的资料变成题目与间隔复习的 DSH 学习插件

ADHD-friendly study companion agent for Claude Code: spaced repetition, small-chunk teaching, Feynman reflection

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

Local-first cross-session long-term memory for DeepSeek Harness: dual-scope SQLite stores, hybrid FTS5 + local-vector retrieval with RRF, an evidence gate, provenance audit and SM-2 spaced repetition. 23 narrow tools, zero external services, zero API keys

Learn as your AI coding assistant builds. You can outsource your thinking, but you can't outsource your understanding. A learning companion for the vibe coding era.

Turn any markdown, local folder, or GitHub learning repo into a guided course inside DeepSeek Harness: gated skill-tree progression, BKT mastery tracking, SM-2 spaced repetition.

Learn while your agent works — local knowledge graph, spaced repetition, and quiz gating for agent-assisted development.

🌳 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.