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Open Library — API status & change history

Books, book covers and related data

Last checked 2026-11-02 20:38 UTC — HTTP 200, 745 ms. Availability over 30 days of data: 96.55%.

904 ms · 2026-10-04 07:34 UTC892 ms · 2026-10-05 07:36 UTC916 ms · 2026-10-06 07:37 UTC757 ms · 2026-10-07 07:40 UTC962 ms · 2026-10-08 07:42 UTC956 ms · 2026-10-09 07:45 UTC1045 ms · 2026-10-10 07:47 UTC953 ms · 2026-10-11 07:49 UTC908 ms · 2026-10-12 07:52 UTC936 ms · 2026-10-13 07:54 UTC718 ms · 2026-10-14 07:56 UTC936 ms · 2026-10-15 07:58 UTC1296 ms · 2026-10-16 07:59 UTC301 ms · 2026-10-17 08:01 UTC778 ms · 2026-10-18 08:03 UTC838 ms · 2026-10-19 08:05 UTC207 ms · 2026-10-20 08:08 UTC222 ms · 2026-10-21 08:12 UTC295 ms · 2026-10-22 08:15 UTC235 ms · 2026-10-23 08:18 UTC220 ms · 2026-10-24 08:20 UTC3673 ms · 2026-10-25 08:22 UTC182 ms · 2026-10-26 08:24 UTC316 ms · 2026-10-27 08:26 UTC216 ms · 2026-10-28 08:28 UTC158 ms · 2026-10-29 08:30 UTC95 ms · 2026-10-30 08:32 UTC1600 ms · 2026-10-31 08:34 UTC917 ms · 2026-11-01 20:37 UTC745 ms · 2026-11-02 20:38 UTC
latency · last 30 checks

Auth: none · HTTPS: yes · Docs

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Shape history

2 confirmed · 11 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

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