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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.

Gematria API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
77 ms
Server probes · 24h
Subscribers
4,418
active
Total calls
80
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.

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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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