Is a word a stopword?
API · /stopwords-api
Stopwords API
healthy
4,816 Subscribers
Stopword lists and removal for 58 languages. Fetch the full stopword list for a language, see all supported languages with their word counts, check whether a single word is a stopword, or strip stopwords out of a block of text to get a clean keyword stream. Built on the open stopwords-iso dataset and served entirely in-memory, so responses are instant and the service is always available. Ideal for search indexing and relevance, NLP preprocessing and text mining, keyword extraction, tag generation and content tooling.
api.oanor.com/stopwords-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 68 ms
- Server probes · 24h
- Subscribers
- 4,816
- active
- Total calls
- 16
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 2,000 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 2,000 requests/month, 2 req/s
- Lists, languages, check & remove
- 58 languages
- No credit card
Basic
€2.00 /month
- 100,000 calls / month
- 5 requests / second
- Hard cap (429 above quota, no overage)
- 100,000 requests/month, 5 req/s
- Multilingual stopword removal
- Single-word checks
- Commercial use, email support
Pro
€9.00 /month
- 1,500,000 calls / month
- 20 requests / second
- Hard cap (429 above quota, no overage)
- 1,500,000 requests/month, 20 req/s
- High-volume NLP preprocessing
- Text-cleaning at scale
- Priority email support
Mega
€27.00 /month
- 15,000,000 calls / month
- 60 requests / second
- Hard cap (429 above quota, no overage)
- 15,000,000 requests/month, 60 req/s
- Search-indexing & text-mining scale
- Maximum concurrency
- Priority support
Built by
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api.oanor.com/emoji-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Stopwords API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Stopwords API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Stopwords 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 Stopwords API cost?
Stopwords API has a free tier with 100 calls / month. Paid plans start at €2.00 / 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 Stopwords API GDPR-compliant?
All requests to Stopwords 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/stopwords-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/stopwords-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/stopwords-api/SOME_PATH");
curl_setopt($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/stopwords-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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