Open Library API

Open Library is an open, editable library catalog for books. This API provides access to book data, author information, covers, and search functionality. **Rate Limits**: Default is 1 request/second. With a User-Agent header containing contact info, you get 3 requests/second. **Data Extensions**: Add .json, .rdf, or .yml to any page URL to get structured data. Source: Based on official Open Library API with enhancements from model knowledge and testing.

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Base URL: https://openlibrary.org/
Auth: none
Endpoints: 19
Reachable: yes
CORS: unknown
Last checked: 2026-03-14 16:08:57.062124

Links

Homepage: https://openlibrary.org/contact
API Base: https://openlibrary.org/
Documentation:

100.0%

Uptime (7d)

1126ms

Avg latency (7d)

38

Probes (7d)

Latency (7d)

Success Rate (7d)

Topics

ENTERTAINMENT, KNOWLEDGE

Endpoints

Method Path Summary Auth Last Status Latency
GET /api/books Get book information by bibkeys none 200 869ms
GET /api/volumes/brief/{key_type}/{value}.json Get volume information none — —
GET /authors/{authorId}.json Get author by ID none 200 699ms
GET /authors/{authorId}/works.json Get works by author none 200 619ms
GET /authors/{author_id}.json Get author details none 200 708ms
GET /authors/{olid}.json Get author by OLID none 200 512ms
GET /authors/{olid}/works.json Get works by author none 200 996ms
GET /books/{editionId}.json Get edition by ID none 200 502ms
GET /books/{olid} Get edition by OLID none 200 684ms
GET /books/{olid}.json Get edition by OLID none — —
GET /covers/{key_type}/{value}-{size}.jpg Get book cover image none — —
GET /isbn/{isbn}.json Get book by ISBN none 200 924ms
GET /search.json Search works none 200 950ms
GET /search/authors.json Search authors none 200 684ms
GET /subjects/{subject}.json Get works by subject none 200 990ms
GET /works/{olid}.json Get work by OLID none 200 500ms
GET /works/{workId}.json Get work by ID none 200 651ms
GET /works/{workId}/editions.json Get editions of a work none 200 585ms
GET /works/{work_id}.json Get work details none 200 663ms