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API · /yahtzee-api

Yahtzee Score API

healthy 4,654 Subscribers

Yahtzee scoring maths as an API, computed locally and deterministically — the category scores and totals a dice-game scoring app runs on. (It scores a given roll; it does not roll the dice.) The score endpoint takes five dice and returns the value of every one of the thirteen boxes at once: the upper boxes (ones through sixes) score the sum of that number, three- and four-of-a-kind and chance score all five dice, a full house is 25, a small straight (four in a row) 30, a large straight (five in a row) 40 and a Yahtzee (five of a kind) 50 — so 3-3-3-5-6 is worth 20 in three-of-a-kind, 4-4-4-5-5 is a 25-point full house, and it flags the highest-scoring box for you. The total endpoint adds up a finished card: the 35-point upper-section bonus when the upper boxes reach 63 (and how many points you still need for it), plus 100 for each extra Yahtzee, to give the grand total. Everything is computed locally and deterministically, so it is instant and private. Ideal for dice-game, board-game-companion, family-game and scorekeeping app developers, score-sheet and tournament tools, and game software. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 2 compute endpoints. For random rolls use a dice API.

#yahtzee #dice #scoring #board-game #games #developer-tools
api.oanor.com/yahtzee-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
100 ms
Server probes · 24h
Subscribers
4,654
active
Total calls
3
last 7 days
status Full status page → · 6 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 7,520 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 7,520 calls/month
  • 2 req/sec
  • Roll scoring + grand total
  • No credit card
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Starter

€4.07 /month

  • 58,400 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 58,400 calls/month
  • 6 req/sec
  • All 13 categories, best box, upper bonus
  • Email support
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Pro

€11.44 /month

  • 236,200 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 236,200 calls/month
  • 15 req/sec
  • Score-sheet & tournament pipelines
  • Priority support
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Mega

€36.18 /month

  • 1,363,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,363,000 calls/month
  • 40 req/sec
  • Platform scale
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Farkle Score API

Farkle dice-scoring maths as an API, computed locally and deterministically — the points a Farkle (Zilch, Ten Thousand) scoring app tallies a roll by. The score endpoint takes up to six dice and returns the value by the common ruleset: a single 1 is 100 and a single 5 is 50; three of a kind scores the face times 100 (three 1s being the exception at 1000); four, five and six of a kind are 1000, 2000 and 3000; a 1-to-6 straight or three pairs is 1500; and two triplets is 2500 — so 1-1-1-5-5-5 scores 2500 as two triplets rather than 1100, a 1-2-3-4-5-6 straight is 1500, and 6-6-6-2-3 is 600 with the 2 and 3 dead. It flags a farkle when nothing scores (you lose the turn’s points) and tells you whether every die counted — a hot dice that lets you roll all six again. Rulesets vary, so it scores the widely-used set and says so. Everything is computed locally and deterministically, so it is instant and private. Ideal for dice-game, party-game and scoring app developers, score-helper and game-night tools, and board-game-companion software. Pure local computation — no key, no third-party service, instant. Scores a roll; it does not roll the dice. Live, nothing stored. 1 compute endpoint.

api.oanor.com/farkle-api

Dice Probability API

Tabletop dice-probability maths as an API, computed locally and deterministically and exactly — the odds behind the rolls, not the rolls themselves. The advantage endpoint gives the D&D-style chances of beating a target on a d20 (or any die) rolling normally, with advantage (roll twice, keep the higher) or with disadvantage (keep the lower): needing an 11+ is 50 % normally, 75 % with advantage and 25 % with disadvantage, and it reports the average roll — advantage lifts a d20 from 10.5 to about 13.8. The pool endpoint handles success-counting systems (World of Darkness, Shadowrun): for a pool of dice that succeed on a face at or above a threshold it gives the chance per die, the expected number of successes and the exact binomial probability of getting exactly, or at least, a target number — six d10s succeeding on 7+ average 2.4 successes with a 45.6 % chance of three or more. The exploding endpoint gives the mean of an exploding ("acing", open-ended) die that re-rolls and adds on its maximum face — a d6 averages 4.2 instead of 3.5. Everything is computed locally and deterministically, so it is instant and private. Ideal for tabletop, virtual-tabletop, game-design and TTRPG app developers, odds-and-probability helpers, and game-master tools. Pure local computation — no key, no third-party service, instant. Exact maths, no simulation. Live, nothing stored. 3 compute endpoints. For random rolls use a dice-roller API.

api.oanor.com/dicepool-api

Dice API

A fast, fully-local dice toolkit for games and simulations: roll dice notation (NdM with plus and minus modifiers, multiple dice terms like 1d8+1d6+2, and keep-highest or keep-lowest for advantage and disadvantage such as 2d20kh1), parse and validate a notation, and compute the deterministic minimum, maximum and mean of a roll. Rolls use a cryptographically secure random source. Every endpoint accepts input via the query string or the request body. Pure server-side compute, no third-party upstream, so responses are instant and always available. Ideal for tabletop and RPG tools, Discord and chat bots, virtual tabletops and game backends.

api.oanor.com/dice-api

Cribbage Score API

Cribbage hand-scoring maths as an API, computed locally and deterministically — the count a cribbage player, app or league tallies a hand by. The score endpoint takes the four-card hand and the starter (cut) card and returns the full breakdown by the rules: every distinct combination of cards summing to fifteen scores 2, each pair scores 2 (so three of a kind is 6 and four is 12), each run of three or more consecutive cards scores its length — counting the duplicate runs that pairs create — a four-card flush in the hand is 4 (five with the starter is 5, and the crib only scores a five-card flush), and his nobs, a Jack in hand matching the starter’s suit, is 1. It correctly scores the famous best hand, J-5-5-5 with a fifth 5 cut, at the maximum 29. The count endpoint tallies just fifteens, pairs and runs for any one to eight cards — useful for checking part of a hand or the pegging pile. Everything is computed locally and deterministically, so it is instant and private. Ideal for cribbage, card-game, board-game-companion and scoring app developers, score-verification and teaching tools, and game software. Pure local computation — no key, no third-party service, instant. Cards as rank+suit (5H, TD, JS). Live, nothing stored. 2 compute endpoints.

api.oanor.com/cribbage-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Yahtzee Score API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Yahtzee Score API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Yahtzee Score 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 Yahtzee Score API cost?
Yahtzee Score API has a free tier with 100 calls / month. Paid plans start at €4.07 / 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 Yahtzee Score API GDPR-compliant?
All requests to Yahtzee Score 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/yahtzee-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/yahtzee-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/yahtzee-api/SOME_PATH");
curl_setopt($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/yahtzee-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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