🇪🇺 Hosted in the EU — data never leaves Europe Checking…

Spam detection API.
One endpoint. A score back in milliseconds.

Send content to POST /api/v1/spam-check. Get back a score between 0.0 and 1.0, a verdict, and which signals fired. No CAPTCHA — works server-side, invisible to users.

Get API key free Read the docs

POST /api/v1/spam-check

curl -X POST \
  https://kireifilter.net/api/v1/spam-check \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{
    "type":    "comment",
    "content": "Buy cheap meds at...",
    "metadata": { "ip": "203.0.113.42" }
  }'

200 OK

{
  "isSpam":    true,
  "score":     0.87,
  "reasons": [
    "Spam keywords detected",
    "IP on RBL"
  ],
  "checkedAt": "2025-03-18T09:14:22Z"
}

Detection pipeline

Independent layers run in sequence. Scores accumulate; high-confidence matches short-circuit the chain.

#	Layer	What it checks
1	Custom rules Pro+	Your own allow and deny lists applied before anything else
2	IP & sender reputation	Real-time blocklists, prior submission history, and repeat offenders
3	Content analysis	Links, patterns, obfuscation attempts, and text quality signals
4	Email intelligence	Address validity, spoofing, authentication, and throwaway detection

Get started in three steps

1

Create an account

Free plan included — no credit card required.
2

Generate an API token

From the dashboard settings. You can create and revoke tokens at any time.
3

Send a POST before persisting data

Works in any language. Act on isSpam — reject, queue for review, or pass through.

Properties

No CAPTCHA: Filtering runs server-side. Real users see nothing different.
EU-hosted: Servers in Germany (Hetzner). Data never leaves the EU.
GDPR-compliant: No third-party trackers, no cross-account data sharing.
You decide: We return a score. What you do with it stays in your code.
Any stack: JSON over HTTP. PHP, Python, Node.js, Ruby, Go — it doesn't matter.