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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.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
74 ms
Server probes · 24h
Subscribers
3,687
active
Total calls
0
last 7 days
status Full status page → · 3 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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Related APIs

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ISBN Validator API

ISBN validation and conversion as an API, computed locally and deterministically. The validate endpoint detects whether a code is an ISBN-10 or an ISBN-13, ignores hyphens and spaces, and verifies the check digit — ISBN-10 with the mod-11 scheme whose last character may be the letter X (for 10), and ISBN-13 with the weighted 1-3-1-3 mod-10 scheme — so 0-306-40615-2 and 978-0-306-40615-7 both validate while a wrong check digit is rejected. The checkdigit endpoint computes the trailing check digit for a 9-digit ISBN-10 stem or a 12-digit ISBN-13 stem (and recomputes it for a full code). The convert endpoint converts between the two forms: an ISBN-10 becomes an ISBN-13 by prefixing 978 and recomputing the check, and a 978-prefixed ISBN-13 converts back to ISBN-10 (979-prefixed codes have no ISBN-10 equivalent). Everything is computed locally and deterministically, so it is instant and private. Ideal for publishing, library, bookstore, catalogue, e-commerce and metadata app developers, ISBN-validation and barcode tools, and inventory systems. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is ISBN-specific validation and conversion; for generic Luhn/Verhoeff check digits use a check-digit API.

api.oanor.com/isbn-api

CTAN API

The TeX and LaTeX package ecosystem — CTAN, the Comprehensive TeX Archive Network — as an API. Look up any of CTAN's ~6,900 packages for its caption and description, latest version and date, license, authors (with resolved names), aliases, topics, home and repository links, and whether it ships with MiKTeX and TeX Live; search the whole registry by name and caption; and resolve any CTAN author id to a name. Covers the TeX/LaTeX world from PGF/TikZ, Beamer and KOMA-Script to amsmath, biblatex and listings. Live from the official CTAN JSON API. Ideal for LaTeX editors and tooling, package dashboards, academic-publishing pipelines and TeX ecosystem analytics. Open data from CTAN.

api.oanor.com/ctan-api

Bowling Score API

Ten-pin bowling maths as an API, computed locally and deterministically — the scoring, handicap and average numbers a bowler, league or scoring app runs on. The score endpoint plays a full game from a comma list of the pins knocked down on each roll and applies the real rules: a strike scores 10 plus your next two rolls, a spare 10 plus the next one, an open frame just the pins, with the 10th frame’s bonus rolls handled — so twelve strikes is a perfect 300, twenty 9-then-miss frames are 90, and all spares with a 5 bonus is 150, returned frame by frame with the running total. The handicap endpoint levels a league: handicap per game = ⌊(basis − average) × percent⌋, never below zero, so a 150 average on the common 90 %-of-220 setup earns 63 pins a game and 189 over a three-game series. The average endpoint divides total pins by games (dropping the fraction, as leagues do), rolls in a new series to update it, and works out the pins you need over the next games to reach a target average. Everything is computed locally and deterministically, so it is instant and private. Ideal for bowling-league, scoring, sports and recreation app developers, scorekeeping and handicap tools, and centre-management software. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 compute endpoints.

api.oanor.com/bowling-api

Scale Model API

Scale-model maths as an API, computed locally and deterministically — the real-to-model conversions a modeller, model-railroader, wargamer or diorama-builder works in. The convert endpoint scales a dimension either way at any scale, given as a ratio (1:35), a number (87.1) or a name (Z, N, TT, HO, OO, S, O, G, 1/72, 1/48, 1/35, 1/24, 1/64, 1/43, 1/18): real → model divides by the ratio, model → real multiplies, so a 1:35 tank 6 metres long becomes 171 mm and an HO (1:87.1) boxcar 12.2 metres long becomes 140 mm, with the answer in mm, cm, m, inches and feet. The identify endpoint finds the scale from a real measurement and the model of it — scale = real ÷ model — and names the nearest standard scale with how far off it is, so you know whether figures and accessories will match. The scales endpoint lists the common named scales and compares any two, telling you that a 1:35 model is about 2.06 times the size of the same subject at 1:72. Everything is computed locally and deterministically, so it is instant and private. Ideal for scale-modelling, model-railroad, wargaming, diecast, architecture and diorama app developers, conversion and shopping tools, and hobby software. Pure local computation — no key, no third-party service, instant. Length in mm/cm/m/in/ft. Live, nothing stored. 3 compute endpoints. For typographic modular scales use a different API.

api.oanor.com/scalemodel-api

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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