Libofcongress Mcp Server

Plugs Claude into three Library of Congress APIs: the main digital collections search (with format, date, subject, and location filters), Chronicling America's newspaper archive with full OCR text extraction, and the LC Subject Headings authority file. You get six tools that cover discovery, full metadata retrieval, and newspaper page text fetching. The newspaper tools are the standout piece. They return OCR excerpts inline during search, then pull complete ALTO XML text for individual pages, which is useful for historical research or citation work that needs the actual digitized words, not just catalog records. Also exposes a resource template for stable item references.