Search authors
API · /books-api
Books API
healthy
4,847 Subscribers
Search millions of books, look up editions by ISBN-10/13 and find authors — with covers, publish years, publishers, page counts and subjects. Powered by Open Library (Internet Archive).
api.oanor.com/books-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 1546 ms
- Server probes · 24h
- Subscribers
- 4,847
- active
- Total calls
- 135
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 2,500 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 2,500 calls/month at 2 rps
- No credit card
- ISBN-10/13 lookup + book search
- Open Library covers & metadata
Basic
€8.00 /month
- 80,000 calls / month
- 5 requests / second
- Hard cap (429 above quota, no overage)
- 80,000 calls/month at 5 rps
- All endpoints: search, ISBN, authors
- Commercial use allowed
- Email support
Pro
€24.00 /month
- 400,000 calls / month
- 15 requests / second
- Hard cap (429 above quota, no overage)
- 400,000 calls/month at 15 rps
- Bulk author & subject lookups
- Priority email support
- 99.9% uptime target
Mega
€69.00 /month
- 1,500,000 calls / month
- 40 requests / second
- Hard cap (429 above quota, no overage)
- 1,500,000 calls/month at 40 rps
- Highest throughput for catalog sync
- 99.95% uptime SLA
- Priority support & onboarding
Built by
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Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Books API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Books API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Books API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Books API cost?
Books API has a free tier with 100 calls / month. Paid plans start at €8.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Books API GDPR-compliant?
All requests to Books API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.
Pick an endpoint from the list on the left to see its details and try it.
Code snippets
Sign up to get an API key, then call any path under your slug.
curl https://api.oanor.com/books-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/books-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/books-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);import requests
r = requests.get(
"https://api.oanor.com/books-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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