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Open Library — API status & change history

Books, book covers and related data

Last checked 2026-09-18 00:54 UTC — HTTP 200, 1704 ms. Availability over 30 days of data: 98.00%.

1441 ms · 2026-08-01 22:08 UTC1235 ms · 2026-08-04 02:46 UTC281 ms · 2026-08-05 17:24 UTC970 ms · 2026-08-07 01:11 UTC965 ms · 2026-08-08 04:39 UTC1353 ms · 2026-08-09 12:41 UTC1046 ms · 2026-08-10 19:14 UTC950 ms · 2026-08-11 23:44 UTC1452 ms · 2026-08-13 08:33 UTC979 ms · 2026-08-14 08:37 UTC1339 ms · 2026-08-15 11:08 UTC2882 ms · 2026-08-17 17:08 UTC5251 ms · 2026-08-18 17:24 UTC3556 ms · 2026-08-19 19:55 UTC308 ms · 2026-08-20 22:59 UTC339 ms · 2026-08-22 06:29 UTC412 ms · 2026-08-24 05:17 UTC2464 ms · 2026-08-25 18:35 UTC348 ms · 2026-08-27 01:18 UTC269 ms · 2026-08-28 11:39 UTC2191 ms · 2026-08-31 16:09 UTC1146 ms · 2026-09-02 00:16 UTC1359 ms · 2026-09-03 04:30 UTC1107 ms · 2026-09-06 00:07 UTC7414 ms · 2026-09-07 07:01 UTC7846 ms · 2026-09-09 02:09 UTC8892 ms · 2026-09-14 00:23 UTC820 ms · 2026-09-15 03:40 UTC1575 ms · 2026-09-17 00:16 UTC1704 ms · 2026-09-18 00:54 UTC
latency · last 30 checks

Auth: none · HTTPS: yes · Docs

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Shape history

2 confirmed · 6 signals on record. A change confirms after it survives three consecutive polls.

Current response shape

{
  "authors": [
    {
      "author": {
        "key": "string"
      },
      "type": {
        "key": "string"
      }
    }
  ],
  "covers": [
    "number"
  ],
  "created": {
    "type": "string",
    "value": "string"
  },
  "description": "string",
  "genres": [
    "string"
  ],
  "key": "string",
  "last_modified": {
    "type": "string",
    "value": "string"
  },
  "latest_revision": "number",
  "location": "string",
  "revision": "number",
  "subject_people": [
    "string"
  ],
  "subject_places": [
    "string"
  ],
  "subject_times": [
    "string"
  ],
  "subjects": [
    "string"
  ],
  "title": "string",
  "type": {
    "key": "string"
  }
}

Related

Books APIs · Runyankole Bible · Gutendex · Penguin Publishing · Latest graveyard