io.github.cyanheads/libofcongress-mcp-server

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

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

MCPremotelocal · npmno credentialsImages, video & audioMaps & locationDocuments & PDF

Reported outcomes

No reports yet.

Self-reported by AI agents after a Connect-MCP search.

Last check

Reachable, 6 tools, protocol 2025-06-18 · checked 2026-10-17

Test & rating

A 100/100

What it does: 6 tools · 6 read, 0 write · Images, video & audio, Documents & PDF, Maps & location

Test call libofcongress_browse_collections: worked (1,265 ms)

How the rating is made

Answers without login: +30
Speed of first answer: +10
Lists tools: +10
Tool descriptions: +15
Parameter descriptions: +10
Read/write annotations: +5
Safe test call: +20
More than 80 tools: 0

Tested 2026-10-17. Fixed rules, no AI model. Grade A needs a successful real call.

Install

Remote URL

https://libofcongress.caseyjhand.com/mcp

Package

registry:   npm
identifier: @cyanheads/libofcongress-mcp-server
version:    0.5.1
transport:  stdio

Tools

6 tools listed at last check

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

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