About io.github.cyanheads/libofcongress-mcp-server
io.github.cyanheads/libofcongress-mcp-server is an MCP server in the Scraping category: search LOC digital collections, Chronicling America newspapers (full OCR), and LC Subject Headings.
Install
claude mcp add io-github-cyanheads-libofcongress-mcp-server -- npx -y libofcongress-mcp-servernpx -y libofcongress-mcp-serverThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (6)
libofcongress_browse_collectionsList and browse LOC curated digital collections with descriptions, item counts, and slugs. Optionally filter by keyword.
Parameters not published.
libofcongress_get_itemRetrieve full metadata for a specific LOC item — contributors, subjects, summary, languages, locations, rights, physical description, call number, formats, access restrictions, resource links (TIFF/JPEG/PDF), and related items.
Parameters not published.
libofcongress_get_newspaper_pageRetrieve the full OCR text of a specific newspaper page. Pass the `url` field from a `libofcongress_search_newspapers` result. Returns `ocr_available: false` when the page has no digitized text.
Parameters not published.
libofcongress_searchSearch LOC digital collections by keyword with optional format, date range, subject heading, geographic location, and collection filters. Returns item summaries with IDs for follow-up retrieval.
Parameters not published.
libofcongress_search_newspapersSearch historical newspaper pages in the Chronicling America corpus. Returns pages with OCR text excerpts (~500 chars), publication title, date, state, and the URL needed for `libofcongress_get_newspaper_page`.
Parameters not published.
libofcongress_search_subjectsSearch Library of Congress Subject Headings (LCSH) by keyword. Returns controlled-vocabulary labels and URIs — use the label as the `subject` filter in `libofcongress_search`.
Parameters not published.
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