Library of Congress APIs

The Library of Congress provides APIs for accessing its digital collections including books, photos, videos, maps, manuscripts, and more.

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Base URL: https://www.loc.gov/websites/and/search/engines/
Auth: none
Endpoints: 17
Reachable: yes
CORS: unknown
Last checked: 2026-03-14 16:08:32.541561

Links

Homepage: https://www.loc.gov/apis/
API Base: https://www.loc.gov/websites/and/search/engines/
Documentation:
SDKs:

100.0%

Uptime (7d)

730ms

Avg latency (7d)

14

Probes (7d)

Latency (7d)

Success Rate (7d)

Topics

CULTURE, GOVERNMENT, KNOWLEDGE

Endpoints

Method Path Summary Auth Last Status Latency
GET /collections/ List Collections none 200 104ms
GET /collections/{collection} Get Collection none 404 272ms
GET /collections/{collection}/ Get collection none — —
GET /collections/{name}/ Get collection details none — —
GET /image-services/iiif/{identifier}/info.json Get IIIF image metadata none 404 324ms
GET /image-services/iiif/{identifier}/{region}/{size}/{rotation}/{quality}.{format} Get IIIF image tile none — —
GET /item/{id} Get Item none 404 498ms
GET /item/{id}/ Get item details none 403 96ms
GET /item/{item_id}/ Get item details none — —
GET /manuscripts/ Search manuscripts none — —
GET /maps/ Search maps none — —
GET /photos/ Search photos none — —
GET /search/ Search Collections none 200 2736ms
GET /search/suggest/ Search Suggestions none 403 91ms
GET /sitemap.xml Get sitemap index none 404 243ms
GET /text-services/word-coordinates-service Get word coordinates and OCR text none — —
GET /{collection}/ Search specific collection none — —