ATA is a free, open-source fork of OpenAI's Codex CLI that adds a research stack: paper search (Semantic Scholar, arXiv, OpenAlex), citation graph traversal, PDF reading and synthesis, Hacker News discussion analysis, patent search (90+ offices via EPO), Zotero integration, and a persistent knowledge base that accumulates across sessions.
We also built a reading view for long-form output — when ATA synthesizes a paper or generates a report, it opens as a navigable document with sections and foldable details instead of dumping it into chat. Follow-up questions rewrite the relevant section in place rather than appending at the bottom.
Free, open source, runs locally.
Try it: npm install -g @a2a-ai/ata