Party XP thresholds
API · /dndencounter-api
D&D Encounter API
healthy
3,707 Subscribers
Dungeons & Dragons 5th-edition encounter-building maths as an API, computed locally and deterministically — the XP-budget and difficulty numbers a Dungeon Master balances a fight with. The budget endpoint sums the per-character XP thresholds from the DMG across the party — by party size and level, or a list of mixed levels — to give the easy, medium, hard and deadly budget for one encounter (a party of four 5th-level characters has thresholds of 1,000 / 2,000 / 3,000 / 4,400 XP), plus the total adventuring-day budget. The difficulty endpoint rates an encounter: it sums the monsters' XP, multiplies by the encounter multiplier for the number of monsters (×1.5 for two, ×2 for three to six, up to ×4 for fifteen or more), and compares the adjusted XP to the party thresholds — four 450-XP monsters against that party come to 3,600 adjusted XP, a hard fight. The carry endpoint gives the carrying capacity (Strength × 15, scaled by size), push/drag/lift and the encumbrance thresholds. Everything is computed locally and deterministically, so it is instant and private. Ideal for tabletop, virtual-tabletop, DM-tool and TTRPG app developers, encounter-builder and balance tools, and game-master education. Pure local computation — no key, no third-party service, instant. Uses the DMG tables. Live, nothing stored. 3 compute endpoints. For monster stats and spells use a D&D SRD data API.
api.oanor.com/dndencounter-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 79 ms
- Server probes · 24h
- Subscribers
- 3,707
- active
- Total calls
- 76
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 6,650 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 6,650 calls/month
- 2 req/sec
- XP budget + difficulty + carry
- No credit card
Starter
€4.20 /month
- 59,500 calls / month
- 6 requests / second
- Hard cap (429 above quota, no overage)
- 59,500 calls/month
- 6 req/sec
- Mixed parties, multipliers, encumbrance
- Email support
Pro
€11.70 /month
- 245,000 calls / month
- 15 requests / second
- Hard cap (429 above quota, no overage)
- 245,000 calls/month
- 15 req/sec
- DM-tool & VTT pipelines
- Priority support
Mega
€37.50 /month
- 1,375,000 calls / month
- 40 requests / second
- Hard cap (429 above quota, no overage)
- 1,375,000 calls/month
- 40 req/sec
- Platform scale
- Dedicated SLA
Built by
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api.oanor.com/dnd-api
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api.oanor.com/boardgames-api
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api.oanor.com/canasta-api
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Dominoes scoring as an API, computed locally and deterministically and exactly — the points behind a game of bones, whether you play Block, Draw or All Fives. The score endpoint gives the winner's points at the end of a hand: when a player dominoes or the game blocks, the winner takes the total pip count left in the opponents' hands — pass each opponent's remaining pips and it sums them, optionally rounding to the nearest five as many house rules do, so 12, 8 and 23 left on the table is 43, or 45 rounded. The fives endpoint scores All Fives (Muggins): a play scores whenever the open ends of the layout add up to a multiple of five, and you score that sum — open ends of 3 and 2 make 5 for five points, 5-5-5 across a spinner makes 15, while a 6 scores nothing. The set endpoint gives the statistics of a double-N set: a double-six has (6+1)(6+2)/2 = 28 tiles and 168 total pips, a double-nine has 55 tiles and 495 pips, with the heaviest tile and its pip value. Everything is computed locally and deterministically, so it is instant and exact. Ideal for dominoes apps, online and club scorekeepers, game-night and tournament tools, and learning aids. Pure local computation — no key, no third-party service, instant. Exact integer maths. Live, nothing stored. 3 compute endpoints. Standard Western dominoes; regional variants score differently.
api.oanor.com/dominoes-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for D&D Encounter API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call D&D Encounter API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for D&D Encounter 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 D&D Encounter API cost?
D&D Encounter API has a free tier with 100 calls / month. Paid plans start at €4.20 / 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 D&D Encounter API GDPR-compliant?
All requests to D&D Encounter 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/dndencounter-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/dndencounter-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/dndencounter-api/SOME_PATH");
curl_setopt($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/dndencounter-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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