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API · /bookbinding-api

Bookbinding API

healthy 3,687 Subscribers

Bookbinding and print-production maths as an API, computed locally and deterministically — the spine-width and imposition numbers a book designer, printer or self-publisher needs to lay out a title. The spine endpoint computes the spine width from the page count and the paper's bulk: spine = page count ÷ pages-per-inch (the printer's paper spec, typically ~400–500 for book stock), or leaves × sheet caliper, plus the cover boards — so a 250-page book on 400-PPI stock has a 0.625-inch (15.9 mm) spine. The imposition endpoint works out the binding layout: for saddle-stitch it rounds the page count up to the next multiple of four (one folded sheet is four pages) and reports the blanks to pad and the sheets; for perfect-bound or section-sewn books it gathers the pages into signatures of 8, 16 or 32 and reports the signature count, the required page total and the blank pages. Everything is computed locally and deterministically, so it is instant and private. Ideal for self-publishing, print-on-demand, book-design, prepress and printing app developers, spine-and-cover and imposition tools, and graphic-design education. Pure local computation — no key, no third-party service, instant. Page count counts both sides; PPI is the paper spec. Live, nothing stored. 2 compute endpoints. For paper weight use a paper API and for DPI/resolution a resolution API.

#bookbinding #print #spine-width #imposition #publishing #developer-tools
api.oanor.com/bookbinding-api
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Machine-readable spec so AI agents can integrate this API.

/api/bookbinding-api/openapi.json
/api/bookbinding-api/llms.txt

Discovery: GET /api/index.json lists every API.

Bookbinding API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
79 ms
Server probes · 24h
Subscribers
3,687
active
Total calls
57
last 7 days
status Full status page → · 9 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 4,850 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 4,850 calls/month
  • 2 req/sec
  • Spine width + imposition
  • No credit card
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Starter

€5.10 /month

  • 47,500 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 47,500 calls/month
  • 6 req/sec
  • PPI/caliper, saddle & signatures
  • Email support
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Pro

€13.90 /month

  • 216,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 216,000 calls/month
  • 15 req/sec
  • Prepress & cover pipelines
  • Priority support
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Mega

€42.50 /month

  • 1,255,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,255,000 calls/month
  • 40 req/sec
  • Platform scale
  • Dedicated SLA
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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Bookbinding API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Bookbinding API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Bookbinding 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 Bookbinding API cost?
Bookbinding API has a free tier with 100 calls / month. Paid plans start at €5.10 / 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 Bookbinding API GDPR-compliant?
All requests to Bookbinding 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/bookbinding-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/bookbinding-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/bookbinding-api/SOME_PATH");
curl_setopt($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/bookbinding-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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