API · /deck-api

Deck Builder API

healthy 4,490 Subscribers

Deck-building maths as an API, computed locally and deterministically — the board, joist and fastener counts a homeowner or contractor needs to material out a rectangular deck. The boards endpoint turns the deck size into a real shopping list: rows = deck width ÷ (board width + gap), rounded up, so a 16 ft × 12 ft deck with a 5.5-inch board face (a 5/4×6) and a 1/8-inch gap needs 26 rows; boards run the length, each row takes one 16 ft board, and a 10 % waste allowance brings it to 29 boards plus the linear footage and the deck area. The joists endpoint frames it: joists are spaced along the length, so count = ⌊length ÷ spacing⌋ + 1 — thirteen joists at 16-inch on-center (seventeen at 12-inch for stronger or diagonal decking), each spanning the width, plus two rim joists and a ledger as total framing linear feet. The fasteners endpoint counts the screws: every decking row crosses every joist once and is fastened with two face screws there, so a 16×12 deck takes 26 × 13 × 2 = 676 screws, about 744 with waste — or one hidden clip per intersection. Everything is computed locally and deterministically, so it is instant and private. Ideal for construction, contractor, home-improvement, building-materials and renovation app developers, deck-estimator and takeoff tools, and lumber-yard calculators. Pure local computation — no key, no third-party service, instant. US units (feet/inches). Live, nothing stored. 3 compute endpoints. Rectangular decks; for indoor floor area use a flooring API.

#deck #construction #contractor #lumber #home-improvement #developer-tools

api.oanor.com/deck-api

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Machine-readable spec so AI agents can integrate this API.

/api/deck-api/openapi.json

/api/deck-api/llms.txt

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

Deck Builder API — live data on the oanor API marketplace

API health

healthy

Uptime: 100.00%; Server probes · 24h
Avg latency: 75 ms; Server probes · 24h
Subscribers: 4,490; active
Total calls: 76; last 7 days

Full status page → · 12 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

7,600 calls / month
2 requests / second
Hard cap (429 above quota, no overage)
7,600 calls/month
2 req/sec
Boards + joists + fasteners
No credit card

Starter

€4.65 /month

52,500 calls / month
6 requests / second
Hard cap (429 above quota, no overage)
52,500 calls/month
6 req/sec
Custom board face, gap, spacing & waste
Email support

Pro

€12.55 /month

219,000 calls / month
15 requests / second
Hard cap (429 above quota, no overage)
219,000 calls/month
15 req/sec
Estimator & takeoff pipelines
Priority support

Mega

€39.80 /month

1,295,000 calls / month
40 requests / second
Hard cap (429 above quota, no overage)
1,295,000 calls/month
40 req/sec
Platform scale
Dedicated SLA

Built by

PremiumApi

Related APIs

Other APIs with overlapping tags.

Deck of Cards API

A playing-card deck engine as an API. Create a freshly shuffled deck (one or many decks, with or without jokers), draw cards from it, and reshuffle — with full deck state tracked by a deck id so you can deal hands across multiple calls. Each card comes with its code (e.g. AS, 0H), value, suit and a PNG and SVG image URL, so you can render real cards. Draw cards statelessly from a brand-new deck for quick random picks, or keep a deck_id to build a full game. Ideal for card games and game prototypes, Discord bots, teaching and probability demos, and any app that needs a standard 52-card deck. Built on the Deck of Cards service.

api.oanor.com/cards-api

Handrail & Baluster API

Railing and baluster layout maths as an API, computed locally and deterministically — the baluster-count, spacing and post numbers a deck builder, fabricator or balustrade designer sets a guardrail out with. The baluster-count endpoint gives the smallest number of balusters that keeps every gap within the safety limit: between two posts n balusters leave n+1 gaps, so the count = ceil((rail length − max gap) ÷ (baluster width + max gap)). The usual guardrail limit is a 100 mm (4-inch) sphere — a child-safety rule — so a 2000 mm rail with 40 mm balusters needs 14 of them at even 96 mm gaps; round up, because one fewer opens the gaps past the limit. The layout endpoint sets out a known count evenly: the gap = (rail length − total baluster width) ÷ (count + 1), the centre-to-centre pitch = baluster width + gap, and the first baluster's centre sits one gap plus half a baluster from the post face, so you mark the first centre and step off the pitch with the last gap landing equal to the first. The post-count endpoint sizes the frame: a run needs one more post than spans, spans = ceil(run ÷ max post spacing), posts = spans + 1, even spacing = run ÷ spans — a 6 m run at a 1.8 m max takes 4 spans and 5 posts at a tidy 1.5 m. Everything is computed locally and deterministically, so it is instant and private. Ideal for deck and balustrade design tools, fabrication and estimating apps, and building calculators. Pure local computation — no key, no third-party service, instant. Uses the common 100 mm infill rule — confirm your local code. 3 compute endpoints. For stair rise and run use a stair API; for fence pickets a fence API.

api.oanor.com/handrail-api

Arch Geometry API

Circular-segment arch geometry as an API, computed locally and deterministically — the radius, arc-length and set-out numbers a mason, joiner, stonemason or CAD user lays a segmental arch out with. A segmental arch is an arc of a circle struck through the two springings and the crown: the from-span-rise endpoint takes the span and the rise (the height of the crown above the springing line) and returns the radius = (span²/4 + rise²) ÷ (2·rise), the central angle it subtends, the arc length along the curve, and the segment area of the void below it — flatter arches with a small rise have surprisingly huge radii. The from-radius-angle endpoint inverts it, returning the chord (span), the rise (sagitta), the arc length and the area from a known radius and central angle, the way a curve struck with a trammel or a router on a pivot is described. The setout-ordinates endpoint gives the practical numbers to mark a template: the rise of the arc above a straight base line at equally spaced stations across the span (y = √(R² − x²) − (R − rise)), so you can plot the heights, connect them and cut a plywood former or bend a batten without a giant compass — the ends come out zero at the springings and the middle equals the rise at the crown. Everything is computed locally and deterministically, so it is instant and private. Ideal for masonry and joinery layout tools, stair and window-head design, and CAD and woodworking calculators. Pure local computation — no key, no third-party service, instant. Segmental (up to a semicircle) arcs. 3 compute endpoints. For road curves use a horizontal- or vertical-curve API; for plain shape areas a geometry API.

api.oanor.com/arch-api

Mobile Crane Lift API

Mobile-crane lift-planning maths as an API, computed locally and deterministically — the load-moment, tipping-capacity and outrigger-pad numbers a crane operator, lift planner or rigging engineer checks a pick with. The load-moment endpoint gives the load × its working radius (the horizontal distance from the slew centre to the hook), the single figure a crane's rated-capacity limiter watches: a 5-tonne load at 8 m is a 40 tonne-metre moment, the same as 10 tonnes at 4 m, which is why chart capacity falls steeply as the boom luffs out — moment, not weight, tips the crane. The capacity endpoint gives a simplified tipping balance about the fulcrum: the load that just tips = counterweight × its radius ÷ the load radius, and the rated safe load is a stability fraction of that (~75 % on outriggers, ~66 % on crawlers per the standards) — a teaching/sanity figure that ignores the boom and superstructure, never a substitute for the load chart. The outrigger-pad endpoint sizes the float: required pad area = the outrigger leg load ÷ the soil's allowable bearing pressure (and the side of a square mat), since overloading weak ground is a leading cause of overturns — a 30-tonne leg on 200 kPa wants about a 1.2 m square mat. Everything is computed locally and deterministically, so it is instant and private. Ideal for lift-planning and rigging tools, construction and crane-operations apps, and site-safety utilities. Pure local computation — no key, no third-party service, instant. Simplified — always use the manufacturer load chart. 3 compute endpoints. For sling and WLL loads use a rigging API.

api.oanor.com/crane-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Deck Builder API?

Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Deck Builder API with the x-oanor-key header. No credit card needed for the free tier.

What's the rate limit for Deck Builder 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 Deck Builder API cost?

Deck Builder API has a free tier with 100 calls / month. Paid plans start at €4.65 / 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 Deck Builder API GDPR-compliant?

All requests to Deck Builder 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.

Deck 3

Meta 1

Pick an endpoint from the list on the left to see its details and try it.

GET /v1/boards

Decking boards

Playground

Parameters

Custom headers

Language: Client:

GET /v1/fasteners

Fasteners

Playground

Parameters

Custom headers

Language: Client:

GET /v1/joists

Joist framing

Playground

Parameters

Custom headers

Language: Client:

GET /v1/meta

Spec

Playground

Custom headers

Language: Client:

Code snippets

curl https://api.oanor.com/deck-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."

const res = await fetch("https://api.oanor.com/deck-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();

$ch = curl_init("https://api.oanor.com/deck-api/SOME_PATH");
curl_setopt($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/deck-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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Deck Builder API

API health

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Related APIs

Deck of Cards API

Handrail & Baluster API

Arch Geometry API

Mobile Crane Lift API

Frequently asked questions

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