Spam Protection API
Block Spam. Never Block Customers.
While CAPTCHAs drive away 40% of your visitors and other APIs take 2+ seconds to respond, ActiveLayer catches spam in under 100ms. No puzzles. No friction. No lost leads.
✓ Sub-100ms response
✓ 99.5%+ accuracy
✓ Zero CAPTCHAs
✓ 1,000 checks for free
Everything You Need to Stop Spam Cold
Forget wrestling with CAPTCHAs that annoy your users and APIs that take forever.
Sub-100ms Verdicts
Faster than a page load. Your users never wait.
Zero CAPTCHAs
Invisible protection that never interrupts your visitors.
Confidence Scores
Every verdict comes with a confidence percentage. Not just spam/not spam.
Detection Signals
See exactly which signals triggered the verdict. Full transparency.
API-First
Clean REST API with copy-paste code examples for any stack.
WordPress Plugin
Install, activate, enter your key. Done in 5 minutes.
1,000 Free Checks
Generous free tier. No credit card required.
Multi-Site Ready
One account for all your sites. One dashboard. One bill.
Privacy-First
Minimal data collection. GDPR-friendly. No tracking scripts.
See ActiveLayer in Action
One API. Every platform. Every use case.
5 Lines of Code. That’s It.
Add ActiveLayer to Express, Next.js, Laravel, or any framework with a clean REST call. Get back a verdict with confidence score, detection signals, and response time.
Track All Submissions. Never Lose a Lead.
We don’t block submissions — all entries, including spam, are stored and reviewable. Your lead flow continues without errors, and you’ll only be notified when a submission passes as clean.
Install. Activate. Done.
Install the plugin. Enter your API key. That’s the entire setup. ActiveLayer protects your comments and works behind the scenes with Contact Form 7, WPForms, Gravity Forms, and more.
Why Developers and Agencies Choose ActiveLayer
Stopping spam isn’t luck. It’s a system.
Sub-100ms. Every Single Time.
Other spam APIs take 2+ seconds to return a verdict. ActiveLayer responds in under 100 milliseconds. That’s faster than your database query. Forms submit and comments post without delay, your users never notice, and your conversion rates stay intact.
No CAPTCHAs Means No Conversion Loss.
CAPTCHAs cost you up to 40% of form completions. ActiveLayer works entirely server-side. Your visitors never see a puzzle, never solve a challenge, never rage-quit your checkout. They submit forms, post comments, and move on.
Built for Everyone. Not only Developers.
A clean REST API with high quality documentation. Copy-paste examples for Node.js, PHP, Python, and Laravel. A WordPress plugin ready to go. One product that serves your entire team.
Frequently Asked Questions
Have questions about ActiveLayer? We’ve got answers.
ActiveLayer is a spam protection API for forms and comments. You send us content, we return a spam verdict with confidence score and detection signals in under 100 milliseconds. No CAPTCHAs, no client-side scripts, no user friction.
We analyze content patterns, sender reputation, linguistic signals, and behavioral indicators. Every verdict includes which detection signals triggered, so you always know why something was flagged.
No. ActiveLayer is entirely server-side. Your visitors never see a challenge, a checkbox, or a puzzle. The protection is completely invisible.
Under 100 milliseconds. Consistently. We publish our latency metrics because we believe in transparency over vague claims.
Any platform that can make an HTTP request. We have a WordPress plugin for one-click setup, and our REST API works with Node.js, PHP, Python, Laravel, Next.js, Express, and any other framework.
Yes. 1,000 spam checks. No credit card required. Full API access with no feature restrictions.
We recommend a simple fallback pattern: if our API doesn’t respond within your timeout, let the submission through. We document this graceful degradation pattern in our integration guides. Your forms and comments never break because of us.
Block Spam. It’s That Simple.
Join the developers and agencies who use ActiveLayer to eliminate spam and protect every real submission.
✓ 1,000 checks for free ✓ Setup in minutes ✓ No credit card required