Comment Spam Protection API
Stop Comment Spam. Keep Real Conversations.
While manual moderation burns your team’s time and keyword filters reject legitimate comments, ActiveLayer analyzes content, links, and author reputation in milliseconds. Server-side. No CAPTCHAs. Your users comment freely. Spam never makes it through.
✓ 99.5%+ accuracy
✓ Zero CAPTCHAs
✓ Millisecond response
✓ 1,000 checks free
Built by the same team whose software is trusted by 30,000,000+ websites worldwide.
Everything You Need to Eliminate Comment Spam
One API call per comment. Full verdict with confidence scores and detection signals. No client-side dependencies.
Content Analysis
AI-powered detection analyzes comment text for spam patterns, promotional language, and AI-generated filler. Catches what keyword filters miss.
Link Spam Detection
Identifies SEO spam links, cloaked redirects, and excessive URLs. Flags comments stuffed with backlinks before they pollute your pages.
Author Reputation
Tracks sender behavior across submissions. First-time commenters get scrutinized. Trusted authors get fast-tracked. Reputation builds automatically.
Language Detection
Detects the language of each comment. Flag or auto-reject comments that don’t match your community’s primary language.
Confidence Scores
Every verdict includes a numeric confidence score and detection signals. You decide the threshold for approve, hold, or reject.
Auto-Approve Workflows
Route comments automatically. High-confidence clean comments publish instantly. Borderline comments go to moderation. Spam gets rejected.
Feedback Loop API
Report false positives and false negatives back to ActiveLayer. The detection model trains on your community’s specific patterns over time.
Millisecond Response
Verdicts return faster than your database write. Real-time comment posting with zero perceptible delay for your users.
Automatic Failsafes
If the API is unreachable, comments pass through to your existing moderation queue. Your comment system never breaks.
Spam-Free Comments in 3 Steps
One API key. One endpoint. Every comment checked before it’s published.
1
Get Your API Key
Create a free ActiveLayer account. Copy your API key from the dashboard. No credit card required. You’re ready to integrate in under a minute.
2
Send Comments to the API
When a user submits a comment, send the content to ActiveLayer before saving it to your database. One POST request. Millisecond response.
3
Route Comments Based on the Verdict
Use the verdict and confidence score to decide what happens next. Publish, hold for review, or reject. You control the thresholds.
Why Developers Choose ActiveLayer for Comment Spam
Your comment system should encourage conversation. Not punish it.
Link Spam Dies. Real Comments Live.
SEO spammers flood comment sections with backlinks to gambling sites, pharma pages, and link farms — but basic keyword filters also reject legitimate comments that happen to contain a URL. ActiveLayer analyzes link destinations, anchor text patterns, URL density, and redirect chains. A user sharing a relevant resource gets published; a spammer stuffing five affiliate links gets rejected. Your SEO stays clean and your community stays open.
Your Users Comment Freely. Spam Gets Caught Server-Side.
Requiring login kills anonymous engagement; adding CAPTCHAs punishes every visitor to catch a few spammers. ActiveLayer works entirely server-side — no JavaScript in your pages, no challenges shown to users. Your visitors type a comment, hit submit, and it’s done. Behind the scenes, ActiveLayer checks content in milliseconds and routes it based on the verdict.
Stop Guessing. Start Routing.
Akismet tells you “spam” or “not spam” with no explanation. ActiveLayer returns a confidence score between 0 and 1, an array of detection signals, and a unique detection ID — so a comment flagged at 0.97 with signals [“link_stuffing”, “known_spam_domain”] can be safely auto-rejected, while one flagged at 0.55 with [“new_author”] goes to moderation instead of the trash. You set the thresholds and define the routing logic. Every decision is transparent and auditable.
One POST Request. Any Language. Any Framework.
ActiveLayer is a REST API — if your backend can make an HTTP request, it can filter comment spam. Node.js, Python, Go, Ruby, PHP, Rust: it does not matter. No SDKs, no client-side widgets, no vendor markup in your templates. Send a POST with the comment content and author metadata, get back a verdict in milliseconds. Your integration is 10–15 lines and ships in an afternoon.
Frequently Asked Questions
Have questions about using ActiveLayer for comment spam protection? We’ve got answers.
ActiveLayer analyzes URL destinations, anchor text patterns, redirect chains, URL density within the comment, and known spam domain databases. A comment with one relevant link passes through. A comment stuffed with affiliate links, cloaked redirects, or known link farm domains gets flagged with specific detection signals like “link_stuffing” or “known_spam_domain” so you know exactly what triggered the verdict.
Yes. ActiveLayer detects the language of each comment automatically and analyzes spam patterns specific to that language. You can also pass a language parameter to flag comments that don’t match your community’s primary language. This is especially useful for forums that receive off-language spam at scale.
ActiveLayer evaluates each comment independently based on its content, author metadata, and links. Your threading logic stays entirely in your application. Send each comment as a separate API call when it’s submitted. ActiveLayer’s millisecond response time means there’s no perceptible delay even in real-time threaded discussions.
Both. For real-time comment systems, call the API on each submission. Millisecond response times mean your users see zero delay. For batch processing (importing comments, migrating platforms, or running a backfill), you can send comments in parallel. ActiveLayer handles concurrent requests without throttling on paid plans.
Replace your Akismet API call with an ActiveLayer API call. The request format is a simple POST with comment content and author metadata. The response includes a verdict, confidence score, and detection signals. Most developers complete the migration in under an hour. You can run both services in parallel during the transition to compare results before fully switching.
ActiveLayer has built-in failsafes. If the API is unreachable, your application should fall back to your existing moderation queue. Comments pass through rather than getting blocked. Your comment system never breaks because of a third-party dependency. We recommend a simple timeout and fallback pattern in your integration code.
Yes. The feedback loop API lets you report false positives (real comments marked as spam) and false negatives (spam that got through). ActiveLayer’s detection model learns from your corrections and improves accuracy for your specific content patterns over time.
Free plan: 1,000 checks per month. No credit card required. Pro plan: $19/month for 25,000 checks. Plus plan: $49/month for 100,000 checks. Every plan includes unlimited sites, full API access, and the same detection engine. One comment equals one check.