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API · /scalemodel-api

Scale Model API

healthy 3,519 Subscribers

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.

#scale-model #model-railroad #wargaming #diecast #hobby #developer-tools
api.oanor.com/scalemodel-api
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Machine-readable spec so AI agents can integrate this API.

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

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API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
89 ms
Server probes · 24h
Subscribers
3,519
active
Total calls
4
last 7 days
status Full status page → · 8 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 7,550 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 7,550 calls/month
  • 2 req/sec
  • Convert + identify + scale reference
  • No credit card
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Starter

€4.06 /month

  • 58,800 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 58,800 calls/month
  • 6 req/sec
  • Named scales, mm/cm/m/in/ft, comparison
  • Email support
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Pro

€11.42 /month

  • 236,500 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 236,500 calls/month
  • 15 req/sec
  • Conversion & shopping-tool pipelines
  • Priority support
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Mega

€36.30 /month

  • 1,362,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,362,000 calls/month
  • 40 req/sec
  • Platform scale
  • Dedicated SLA
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Related APIs

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Egg Incubation API

Egg-incubation maths as an API, computed locally and deterministically — the hatch timeline, conditions and brooder numbers a hatchery or backyard chicken-keeper raises a clutch by. The hatch endpoint turns the set day (day 0) into the schedule by species: it knows the incubation period — chicken 21 days, duck 28, quail 17, goose 30, turkey 28, Muscovy 35 and more — and gives the lockdown day, about three days before hatch, when you stop turning the eggs, raise the humidity and leave the lid shut; pass a custom incubation_days for anything else. The conditions endpoint gives the targets: a forced-air incubator at 99.5 °F (still-air a degree or two higher at the top of the eggs), with humidity around 45–55 % through incubation and 65–75 % at lockdown so the membrane stays soft. The brooder endpoint schedules the chicks after they hatch — 95 °F under the lamp in week one, dropping 5 °F a week until they reach room temperature around 70 °F and are feathered enough to leave it. Everything is computed locally and deterministically, so it is instant and private. Ideal for poultry, hatchery, homesteading and farm app developers, incubation-timer and brooder tools, and 4-H / education software. Pure local computation — no key, no third-party service, instant. Guidance — candle the eggs and watch the chicks. Live, nothing stored. 3 compute endpoints.

api.oanor.com/incubation-api

Vegetable Fermentation API

Vegetable lacto-fermentation maths as an API, computed locally and deterministically — the salt numbers a fermenter weighs sauerkraut, kimchi and pickles by. (Vegetables, not meat — for cure and nitrite that is a separate calculation.) Salt is the whole game: too little and the wrong microbes win, too much and the ferment stalls. The salt endpoint does the dry-salt method for shredded veg, salt = vegetable weight × percent, with about 2 % being the classic sauerkraut and kimchi target — so a kilo of cabbage takes 20 grams — and it bands the result from low-and-fast to a near salt-cure. The brine endpoint sizes a submerged ferment, salt = water weight × percent where the percent is of the water as recipes state it (1 ml water ≈ 1 g), so a litre at 5 % needs 50 grams for a standard sour pickle, 3.5 % for a milder one; it also reports the salinity as a percent of the total solution. The salinity endpoint converts the two ways the same brine is expressed — percent of water versus percent of total — so a 5 %-of-water brine reads about 4.76 % on a refractometer. Everything is computed locally and deterministically, so it is instant and private. Ideal for fermentation, homesteading, recipe and food app developers, ferment-calculator and batch tools, and culinary software. Pure local computation — no key, no third-party service, instant. Grams and ml. Live, nothing stored. 3 compute endpoints.

api.oanor.com/fermentation-api

Candy Temperature API

Candy-making maths as an API, computed locally and deterministically — the sugar-syrup stage numbers a confectioner reads a thermometer by. As sugar syrup boils it passes through named stages, each a temperature window with its own texture and uses, and getting within a few degrees is the difference between fudge and toffee. The stage endpoint names the stage for a temperature: 238 °F is the soft-ball stage (fudge, fondant, pralines), 305 °F is hard-crack (toffee, brittle, lollipops), and it handles °F or °C and the off-the-chart cases — still a thin syrup below thread, or darkening to burnt past caramel. The range endpoint gives the temperature window and uses of a named stage, from thread (223–234 °F) through soft-ball, firm-ball, hard-ball, soft-crack and hard-crack to caramel (320–350 °F), in both °F and °C. The altitude endpoint applies the rule that matters in the mountains: cook to 1 °F lower for every 500 feet of elevation, since water boils cooler, so a 300 °F hard-crack recipe is done at 290 °F at 5,000 feet. Everything is computed locally and deterministically, so it is instant and private. Ideal for baking, confectionery, recipe and kitchen app developers, candy-thermometer and timer tools, and cooking-class software. Pure local computation — no key, no third-party service, instant. Use a calibrated thermometer. Live, nothing stored. 3 compute endpoints.

api.oanor.com/candytemp-api

Window Tint API

Window-tint maths as an API, computed locally and deterministically — the net VLT numbers an installer or car owner picks a film by. The catch with tint is that visible light transmission multiplies through layers: factory automotive glass already passes only about 70–80 % of light, so a film’s rated VLT is not what you end up with. The vlt endpoint multiplies it out — net % = the product of each layer’s VLT ÷ 100 — so a 35 % film on 78 % factory glass nets 27.3 %, a 5 % limo film on the same glass nets 3.9 %, and you can stack several layers in one call; it also describes how dark that looks, from near-clear down to blackout. The required endpoint runs it backwards: to land on a target net VLT through known glass you need a film of target ÷ glass × 100, so hitting a 35 % net on 78 % glass takes a 44.9 % film — and it flags the impossible case where the target is lighter than the bare glass already allows. Everything is computed locally and deterministically, so it is instant and private. Ideal for auto-tint, detailing, glass and automotive app developers, film-selection and compliance tools, and shop software. Pure local computation — no key, no third-party service, instant. Legal limits vary by jurisdiction — check local law. Live, nothing stored. 2 compute endpoints.

api.oanor.com/windowtint-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Scale Model API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Scale Model API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Scale Model 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 Scale Model API cost?
Scale Model API has a free tier with 100 calls / month. Paid plans start at €4.06 / 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 Scale Model API GDPR-compliant?
All requests to Scale Model 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/scalemodel-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/scalemodel-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/scalemodel-api/SOME_PATH");
curl_setopt($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/scalemodel-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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