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API · /gematria-api

Gematria API

healthy 4,418 Subscribers

Gematria and isopsephy as an API, computed locally and deterministically — turning words into the numeric sums of their letters. The hebrew endpoint computes Hebrew gematria: the standard value (Mispar Hechrachi) that adds the base value of each letter (alef 1, bet 2 … tav 400), the gadol value that counts the five final letters as 500–900, and the reduced digital root; for example שלום (shalom) is 376. The greek endpoint computes Greek isopsephy with the Milesian numeral system (alpha 1 … omega 800, plus the archaic stigma 6, koppa 90 and sampi 900), case-insensitively; for example λογος (logos) is 373. The english endpoint computes English gematria three ways — the ordinal or simple value (a 1 … z 26), the Pythagorean value that reduces each letter to a single digit 1–9, and the Sumerian value (ordinal × 6) — with the digital root; for example HELLO is 52 ordinal. Non-letter characters are ignored and unrecognised letters are listed. Everything is computed locally and deterministically, so it is instant and private. Ideal for word-game, puzzle, esoteric, study and language app developers, name-numerology and text-analysis tools, and Bible and classics study. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is letter-value gematria; for Roman numerals use a Roman-numeral API and for general number bases a base-conversion API.

#gematria #isopsephy #hebrew #greek #numerology #developer-tools
api.oanor.com/gematria-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
84 ms
Server probes · 24h
Subscribers
4,418
active
Total calls
28
last 7 days
status Full status page → · 16 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 5,800 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 5,800 calls/month
  • 2 req/sec
  • Hebrew + Greek + English
  • No credit card
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Starter

€4.00 /month

  • 49,000 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 49,000 calls/month
  • 6 req/sec
  • Standard, gadol, isopsephy, Pythagorean
  • Email support
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Pro

€11.00 /month

  • 220,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 220,000 calls/month
  • 15 req/sec
  • Word-game & study pipelines
  • Priority support
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Mega

€36.00 /month

  • 1,300,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,300,000 calls/month
  • 40 req/sec
  • Platform scale
  • Dedicated SLA
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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Gematria API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Gematria API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Gematria 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 Gematria API cost?
Gematria API has a free tier with 100 calls / month. Paid plans start at €4.00 / 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 Gematria API GDPR-compliant?
All requests to Gematria 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/gematria-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/gematria-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/gematria-api/SOME_PATH");
curl_setopt($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/gematria-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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