# DOTAIZ > Open project-based learning paths with original sources, prerequisites, exercises, and reflection prompts. - [Catalog API](https://dotaiz.com/api/paths): GET; optional q (up to 240 characters) or exact id. No authentication. Public catalog only, not live AI search. - [Full catalog](https://dotaiz.com/catalog.json): Structured paths with canonical URLs and complete milestones. - [OpenAPI](https://dotaiz.com/openapi.json): API contract. - [Explore](https://dotaiz.com/explore/): Human-readable path index. Time estimates are editorial. Completion is self-reported, not assessed or certified. Cite the canonical path and original resource URLs. Private notes and account information are not available through these endpoints. This guide supplements standard crawlable HTML; it does not guarantee discovery by any agent.