Search academic papers from arXiv and major AI/CV/ML/robotics/NLP conferences via arXivSub (semantic + keyword search over a structured, summarized corpus). Use for 'find papers on X', 'latest research about Y', 'recent conference work on Z', or to start a literature review. Returns each paper with a 6-part summary (what it's about, innovations, techniques, datasets, results, limitations), authors + affiliations, pdf_url, and github_url when code is available.

Given ONE paper you already have (from a prior search result), return the most similar papers from the same corpus — semantic nearest neighbours, each with the full summary and code link. Use for 'more like this', 'related work', 'what else is in this line of work', or to expand a literature review. You can chain it: search -> pick a seed -> find_similar_papers -> repeat on a strong neighbour.

Build aggregate pivot statistics over the arXivSub corpora — the same engine as the website's Custom Chart. Use for trends, rankings, breakdowns and comparisons: 'how has interest in diffusion models trended', 'top institutions in RL', 'papers per month by keyword', 'avg citations by affiliation'. Returns rows of {dim, breakdown, value} for you to interpret and visualize. Requires Pro or active trial days.

Save (or update) a paper in the user's personal arXivSub library. Use for 'save this', 'bookmark that paper', 'add it to my collection', 'note that ...', 'mark as read'. Idempotent: saving the same paper again updates only the fields you pass and never duplicates. Cannot delete — removals are done on the website.

List the user's personal arXivSub library — collections and saved items, optionally filtered. Use for 'what have I saved', 'show my library', 'which papers are in my collection', 'what am I reading'.