Add dataset card

README.md

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+---
+pretty_name: AI Tutor Vector DB (public docs-only bundle)
+viewer: false
+---
+
+# AI Tutor vector DB — public docs-only bundle
+
+Prebuilt retrieval artifacts for the [Towards AI tutor chatbot](https://github.com/towardsai/ai-tutor-app):
+a ChromaDB collection (Cohere `embed-v4.0` embeddings), BM25 index and
+document dictionary, plus the file-based knowledge base (`kb/`) the agent
+browses at runtime.
+
+This is the **public fallback** for the private
+`towardsai-tutors/ai-tutor-vector-db` bundle. It contains **documentation
+sources only** (`claude_code_docs`, `deep_agents`, `langchain`, `langgraph`, `llama_index`, `openai_docs`, `peft`, `transformers`, `trl`); the Towards AI course content that ships in
+the private bundle is not included. The app downloads this bundle
+automatically on first start when no `HF_TOKEN` (or one without access to the
+private dataset) is available.
+
+Derived from the production artifacts by
+`data/scraping_scripts/build_public_docs_bundle.py` — an allowlist filter over
+the prod bundle (same embeddings, same tree layout), followed by a leak audit.
+Documentation content belongs to its upstream projects and keeps their
+respective licenses.