4:1 setup angle and reach
API · /ladder-api
Ladder Safety API
healthy
3,044 Subscribers
Ladder-safety maths as an API, computed locally and deterministically — the angle, reach and load numbers that keep a ladder from sliding out or buckling. The angle endpoint applies the 4:1 rule: the base goes out one foot for every four feet of working length, which lands the ladder at about 75.5° — a 24-foot ladder sits 6 feet from the wall and reaches roughly 23 feet up, steep enough not to tip back and shallow enough not to slide. The extension endpoint gives the usable length and reach of a two-section extension ladder, which loses the overlap the sections share (3 feet up to 36, 4 to 48, 5 beyond), and the working height at the safe angle — remembering the ladder must extend 3 feet above a roof edge you step onto. The duty-rating endpoint turns a total load — your weight plus tools and materials, not just bodyweight — into the right duty class, from Type III household (200 lb) through I industrial (250) to IAA professional (375). Everything is computed locally and deterministically, so it is instant and private. Ideal for construction-safety and trades apps, jobsite and rental tools, OSHA training aids, and home-improvement sites. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 compute endpoints. Educational — always follow the manufacturer's labels and OSHA/ANSI rules.
api.oanor.com/ladder-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 74 ms
- Server probes · 24h
- Subscribers
- 3,044
- active
- Total calls
- 76
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 650 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 650 calls/month
- 2 req/sec
- Angle + extension + duty rating
- No credit card
Starter
€4.15 /month
- 16,000 calls / month
- 8 requests / second
- Hard cap (429 above quota, no overage)
- 16,000 calls/month
- 8 req/sec
- 4:1 rule & overlap
- Email support
Pro
€14.90 /month
- 96,000 calls / month
- 20 requests / second
- Hard cap (429 above quota, no overage)
- 96,000 calls/month
- 20 req/sec
- Safety & jobsite pipelines
- Priority support
Mega
€46.20 /month
- 320,000 calls / month
- 48 requests / second
- Hard cap (429 above quota, no overage)
- 320,000 calls/month
- 48 req/sec
- Platform scale
- Dedicated SLA
Built by
Related APIs
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NRL Live API
Live National Rugby League (NRL) data, sourced from the same official scoring feed the broadcasters use. Pull the live scoreboard, the up-to-date ladder (rank, points, wins, losses, draws, points and tries for/against, points difference, bonus points and current streak), all NRL clubs and club detail, and a full match centre: team stats (metres, passes, line breaks, tackles, missed tackles, offloads) plus both team line-ups with per-player tries, run metres, tackles, line breaks, passes and goals. Read the latest NRL news too. Real-time during play, no key needed upstream. Ideal for footy tipping and fantasy apps, live scoreboards, sports media and match dashboards.
api.oanor.com/nrl-api
AFL Live API
Live Australian Football League (AFL) data, sourced from the same official scoring feed the broadcasters use. Pull the live scoreboard with quarter-by-quarter scoring for every match, the up-to-date ladder (played, wins, losses, points, percentage, current streak and recent form), all 18 clubs and club detail, and a full match box score: team totals for disposals, kicks, handballs, marks, tackles, inside-50s and contested possessions, plus the leaders in each category (goals, disposals and more). Read the latest AFL news too. Real-time during play, no key needed upstream. Ideal for footy tipping and fantasy apps, live scoreboards, sports media and match dashboards.
api.oanor.com/afl-api
Climbing Fall API
Rock-climbing fall maths as an API, computed locally and deterministically — the safety numbers behind a lead fall, from the harshness of the catch to whether you hit the deck. The fall-factor endpoint gives the fall factor, distance fallen ÷ rope paid out, from 0 to a maximum of 2: it, not the absolute distance, decides how hard the catch is, so 4 metres on 2 metres of rope is a brutal factor-2 onto the anchor while the same fall on 10 metres of rope is a mild 0.4. The impact-force endpoint gives the peak force the rope transmits from the spring model F = mg + √((mg)² + 2·mg·k·f), where k is the rope modulus (~20 kN for a dynamic single rope) and f the fall factor — so an 80 kg climber on a factor-1 fall feels about 6.4 kN, and the top runner sees roughly 1.66× that from the pulley effect. The ground-fall endpoint adds it up: total drop = twice the height above the last piece, plus slack, plus the rope's stretch, and tells you whether that clears the ground or a ledge. Everything is computed locally and deterministically, so it is instant and private. Ideal for climbing apps, gym and guiding tools, route-planning and education sites, and gear calculators. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 compute endpoints. Educational estimates — not a substitute for instruction and judgement.
api.oanor.com/climbing-api
Vehicle Braking API
Vehicle-braking physics as an API, computed locally and deterministically. The stopping-distance endpoint computes the total distance to stop a vehicle as the sum of the reaction distance the vehicle travels during the driver's reaction time, v·t, and the braking distance v²/(2·μ·g) — which grows with the square of speed, so doubling the speed quadruples the braking distance — from the speed, the tyre-road friction coefficient, the reaction time and the road grade, along with the deceleration and the time to stop. The braking-force endpoint computes the braking force F = m·a and the deceleration of a vehicle, either from a stop-in-a-given-distance (a = v²/2d) or from the friction coefficient (a = μ·g), with the kinetic energy that must be dissipated as heat. The skid-speed endpoint reconstructs the speed at the start of a skid from the skid-mark length, v = √(2·μ·g·d), a lower-bound estimate used in accident reconstruction. Speed is in km/h by default (also m/s or mph), mass in kg and distances in m; dry asphalt has μ ≈ 0.7, wet ≈ 0.4 and ice ≈ 0.1. Everything is computed locally and deterministically, so it is instant and private. Ideal for automotive, driving-safety, fleet, telematics and accident-reconstruction app developers, stopping-distance and forensic tools, and physics education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is vehicle braking; for general kinematics use a kinematics API and for an object on a slope an inclined-plane API.
api.oanor.com/brake-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Ladder Safety API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Ladder Safety API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Ladder Safety 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 Ladder Safety API cost?
Ladder Safety API has a free tier with 100 calls / month. Paid plans start at €4.15 / 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 Ladder Safety API GDPR-compliant?
All requests to Ladder Safety 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/ladder-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/ladder-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/ladder-api/SOME_PATH");
curl_setopt($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/ladder-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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