PaSa
An advanced paper search agent powered by large language models
...Instead of simply translating a query into keywords and returning a flat list of matching papers, PaSa uses a dual-agent architecture (Crawler + Selector) that can iteratively search, read, analyze, and filter academic publications — simulating how a researcher might dig through citation networks, expand references, and evaluate relevance based on both metadata and content. Given a complex scholarly question (for example, “Which works focus on non-stationary reinforcement learning with UCB-based value methods?”), PaSa decomposes the task: the Crawler generates search queries, retrieves candidate papers (via search tools and citation expansion), then adds them to a “paper queue.” ...