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io.github.cyanheads/libofcongress-mcp-server

io.github.cyanheads/libofcongress-mcp-server · v0.5.1

Measured by MCP Station

Last check	Reachable
Checked at	—
Check success 7 / 30 days	—
First-try success 30 days	—
Median response	—
Lookups 30 days	—
Authentication	No auth
MCP version	2025-06-18
Rank score	—
Declared risk	Read-only (all tools declare readOnlyHint)
Capabilities declared	logging, prompts, resources, tools
Tool definitions	6 tools · with description 100% · input schema is an object 100% · read/destructive hints 100%

Description written by the publisher, not verified

Search LOC digital collections, Chronicling America newspapers (full OCR), and LC Subject Headings.

Connect

streamable-http · https://libofcongress.caseyjhand.com/mcp

claude mcp add --transport http libofcongress-mcp-server https://libofcongress.caseyjhand.com/mcp

{
  "mcpServers": {
    "libofcongress-mcp-server": {
      "url": "https://libofcongress.caseyjhand.com/mcp"
    }
  }
}

Tools as reported by the server

libofcongress_search_items
Search the Library of Congress digital collections by keyword. Optionally filter by material format (photos, maps, newspapers, audio, etc.), date range, subject heading, or geographic location, or scope the search to a single curated collection with collection_slug. Returns item summaries with title
libofcongress_get_item
Retrieve the full metadata record for a specific LOC digital item. Returns the imprint (place, publisher, and date of publication), contributors, LCSH subject headings and the subject terms the search subject filter accepts, summary, languages, locations, rights information, physical description, ca
libofcongress_search_newspapers
Search historical newspaper pages in the Chronicling America corpus. Returns matching pages with the opening of each page's OCR text (~500 characters), publication title, date, the states LOC indexes the title under, and the page URL needed for libofcongress_get_newspaper_page. Filters by keyword, d
libofcongress_get_newspaper_page
Retrieve the full text of one LOC page — a historical newspaper page, or a book or manuscript page — or, with match, only the passages around your search terms, with its publication metadata: for newspapers the title, issue date, place of publication, indexed states, and edition; for every page its
libofcongress_search_subjects
Search Library of Congress Subject Headings (LCSH) by keyword. Returns authorized subject headings and their URIs, ranked by relevance with a heading that exactly matches the query first; a partial word with no keyword match returns the headings that begin with it. Use the returned label as the subj
libofcongress_browse_collections
List and browse Library of Congress curated digital collections. Returns collection names, descriptions, item counts, slugs, and URLs. Optionally filter by keyword. Collections are curated subsets of the digital holdings with specific focuses (e.g., "Civil War Glass Negatives", "Baseball Cards", "WP

Repository · JSON · Text for agents · Registry updated 2026-10-15