Every list check, 2 ms.
Typo-tolerant fuzzy matching — character n-grams, IDF-weighted, scored 0–100 — over arbitrary lists. Exclusion registers, denylists, the CSV of names in your drawer. Try it yourself: no fee, no signup form, just a sign-in link.
No password, no card. Free tier: 1 key, 1 req/s, 10,000 checks a month.
curl -s https://api-free.kurn.it/v1/query \
-H "X-API-Key: $KURN_KEY" \
-d '{"q":"jane smith","lists":["leie","sam"]}'
{
"candidates": [
{ "key": "JANE SMITH FITZGERALD",
"score": 100,
"list": "leie",
"payload": { "state": "NC",
"excl_type": "1128b4",
"excl_date": "20121220" } }
],
"versions": { "leie": "4f107b965201@83639+j0" },
"took_us": 1026
}
From nothing to querying
No sales call, no sandbox tier, no OAuth dance. About two minutes.
Give us an address
A proof-of-work runs in your browser instead of a captcha. No tracking, no third parties.
Click the link we send
Valid an hour. Your key appears once and is kept only as a hash.
Query
One endpoint. JSON in, ranked candidates out, 2 ms in the middle.
Any list. These ship free.
Free tier limits
Want more? Bigger volumes, your own private lists, and continuous re-checking that webhooks you the moment a list moves — all real, all in private beta. Say hello: — mail ops@kurn.it.