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API · /naics-api

NAICS API

healthy 4,889 Subscribers

The North American Industry Classification System (NAICS 2022) as an API — 2,100+ industry codes in a 5-level hierarchy (sector → subsector → industry group → industry → national industry). Look up any code (e.g. 541511 → Custom Computer Programming Services) with its full ancestor chain and direct children; search industries by title (e.g. "software", "restaurant"); or navigate the tree from the 20 top-level sectors down. NAICS is the standard used by US, Canadian and Mexican statistical agencies to classify business establishments. Ideal for business classification, market research, CRM enrichment, lead segmentation and economic analysis.

#naics #industry-codes #classification #business #sic #b2b
api.oanor.com/naics-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
96 ms
Server probes · 24h
Subscribers
4,889
active
Total calls
228
last 7 days
status Full status page → · 228 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 5,000 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 5,000 calls/month
  • 2 req/sec
  • Lookup + search + tree
  • No credit card
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Starter

€4.00 /month

  • 70,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 70k calls/month
  • 8 req/sec
  • Hierarchy navigation
  • Email support
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Pro

€11.00 /month

  • 350,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 350k calls/month
  • 20 req/sec
  • CRM / lead enrichment
  • Priority support
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Mega

€29.00 /month

  • 1,800,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1.8M calls/month
  • 50 req/sec
  • Market-research platform
  • Dedicated SLA
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Search and look up the global register of legal entities (companies, funds, branches) by name or LEI, powered by the GLEIF Legal Entity Identifier system — roughly 2.6 million entities worldwide. Returns the official legal name, legal form, jurisdiction, registered address, entity status and registration details. Ideal for KYB, compliance, onboarding and supplier verification.

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Public holidays for 120+ countries — by year, the next upcoming holidays for a country, and the list of supported countries. Each holiday includes the date, English and local name, scope (national/regional) and type. Ideal for HR, scheduling and booking systems.

api.oanor.com/holidays-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

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

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