What problem does it solve? Finding and retrieving open-access scientific literature manually is slow and fragmented across publisher sites. This Skill provides programmatic access to Europe PMC's database of over 43 million abstracts and 9 million full-text articles, letting you search, download, and explore papers directly from the command line. ## Core Features & Use Cases - Literature Search: Query Europe PMC by DOI, PMID, author, keyword, journal, or date range using the full Europe PMC search syntax, with automatic open-access filtering and cursor-based pagination. - Full-Text & PDF Retrieval: Download open-access PDFs or extract full text as plain text or raw JATS XML by PMCID. - Citation Graph Exploration: Retrieve the articles citing a given paper or fetch its complete reference list for bibliography analysis. - Use Case: Given a DOI of a landmark paper, look up its PMCID, download the PDF, pull the full text for review, and then traverse its citing articles to map the surrounding research landscape. ## Quick Start Search Europe PMC for open-access papers on CRISPR cancer and save the top five results to a JSON file.