Review Spam Protection API
Stop Fake Reviews Before They Publish
While manual moderation falls behind and keyword filters miss sophisticated fakes, ActiveLayer analyzes every review for authenticity in milliseconds. AI-powered content analysis, duplicate detection, and reviewer reputation scoring. Server-side. Invisible. No CAPTCHAs.
✓ 99.5%+ accuracy
✓ Millisecond verdicts
✓ Full transparency
✓ 1,000 checks free
Built by the same team whose software is trusted by 30,000,000+ websites worldwide.
Everything You Need to Eliminate Review Spam
Keyword filters miss sophisticated fakes. Manual moderation doesn’t scale. ActiveLayer handles it all.
Content Authenticity Analysis
AI examines review text for authenticity signals. Detects generic language, templated phrasing, and artificially generated content that human moderators miss.
Duplicate Detection
Identifies reviews reposted across products, slightly reworded copies, and cross-platform duplicates. Catches review farms before they pollute your listings.
Sentiment Analysis
Flags reviews with mismatched sentiment. A 5-star review with negative language or a 1-star review with no specific complaint gets flagged automatically.
Reviewer Reputation Scoring
Evaluates submission patterns, account age signals, and behavioral indicators to score reviewer trustworthiness before the review goes live.
Bulk Posting Detection
Detects coordinated review campaigns. Multiple reviews from similar sources in short timeframes trigger pattern-based alerts with full signal transparency.
Confidence Scoring
Every verdict includes a confidence score and detection signals. You see exactly why a review was flagged. No black boxes. No guessing.
Millisecond Response
Verdicts return faster than your database query. Reviews are checked before they publish. Your users never wait.
Cross-Framework Compatibility
Works with any language or framework. Node.js, Python, PHP, Go, Ruby. One REST API call. No client-side dependencies.
Automatic Failsafe
If the API is unreachable, your review system keeps working. Submissions pass through and are marked for manual review later. Your platform never breaks.
Spam-Free Reviews in 3 Steps
Add review protection to your platform in minutes, not weeks.
1
Get Your API Key
Sign up for a free ActiveLayer account. Copy your API key from the dashboard. No credit card required.
2
Send Reviews to ActiveLayer
When a user submits a review, send the content to ActiveLayer’s API before publishing. You get back a verdict with confidence score and detection signals in milliseconds.
3
Publish or Block Based on the Verdict
Use the verdict and confidence score to decide what happens next. Publish clean reviews instantly. Block spam automatically. Queue borderline reviews for human moderation.
Why Platforms Trust ActiveLayer to Protect Their Reviews
Real reviews build trust. Fake reviews destroy it. Here’s how ActiveLayer keeps your platform credible.
Keyword Filters Are Guessing. ActiveLayer Is Analyzing.
Sophisticated fake reviews don’t contain spam keywords — they use natural language, mention specific product features, and read like real customers wrote them. ActiveLayer’s AI analyzes content patterns, linguistic authenticity, sentiment consistency, and reviewer behavior simultaneously. It flags 5-star reviews with templated phrasing and catches coordinated campaigns that no keyword list can identify. Your moderation team stops playing whack-a-mole.
Your Competitors Send Fake 5-Stars. Your Rivals Send Fake 1-Stars. ActiveLayer Catches Both.
Review manipulation works in both directions — sellers boost with fake positives, competitors sabotage with fake negatives. ActiveLayer analyzes reviewer reputation, posting frequency, sentiment-rating mismatches, and cross-product patterns to catch both. A new account posting ten 5-star reviews in an hour gets flagged; a wave of 1-star reviews on one product from purchase-free accounts gets flagged too. Every detection includes a confidence score and specific signals so your team can make an informed decision.
10 Reviews or 10 Million. Same Response Time.
Manual moderation collapses at scale — hiring more moderators is expensive, slow, and inconsistent. ActiveLayer returns verdicts in milliseconds regardless of volume, with the same depth of analysis every time. Auto-publish clean reviews, auto-block high-confidence spam, and route only borderline cases to your human team. Your moderators spend their time on judgment calls, not obvious spam.
No Black Boxes. Every Verdict Comes With Receipts.
When a review gets blocked, you need to explain why — to the reviewer, your compliance team, and marketplace regulators. ActiveLayer returns a confidence score and specific detection signals with every verdict: “Duplicate content detected across 3 products.” “Bulk posting pattern.” “Sentiment-rating mismatch.” Your support team can reference those signals on appeals, your compliance team has an audit trail, and every moderation decision is explainable and defensible.
Frequently Asked Questions
Have questions about ActiveLayer for review spam protection? We’ve got answers.
Yes. ActiveLayer analyzes content patterns, reviewer reputation, and behavioral signals regardless of the rating. Fake 5-star reviews from review farms and fake 1-star reviews used as competitive sabotage both get detected. Every verdict includes specific signals so you know the exact manipulation type.
Yes. Include `purchase_verified` in the metadata when you send a review check. ActiveLayer factors purchase verification into its analysis alongside content patterns, reviewer behavior, and other signals. Reviews from unverified accounts with suspicious patterns receive higher confidence spam scores.
Yes. ActiveLayer’s content analysis supports multi-language review detection. The AI analyzes linguistic patterns, sentiment consistency, and content authenticity across languages. Duplicate detection and reviewer reputation scoring work regardless of the review language.
Every verdict includes a detection ID, confidence score, and specific detection signals. This gives your compliance team a complete audit trail for every moderation decision. When regulators or platform policies require you to explain why a review was removed, you can reference the exact signals that triggered the flag.
ActiveLayer provides detection signals with every verdict so your support team can explain exactly why a review was flagged. You control the appeal process on your platform. If a review is reinstated, use ActiveLayer’s feedback API to report it as a false positive. This improves detection accuracy for your specific content patterns over time.
Milliseconds. ActiveLayer returns verdicts faster than your database query. Your users submit a review and see an immediate response. There’s no visible delay, no loading spinner, and no queue that backs up during high-traffic periods.
Yes. ActiveLayer’s bulk posting detection identifies patterns like multiple reviews from similar sources in short timeframes, cross-product duplication, and account clusters with correlated behavior. Each flagged review includes the specific campaign-level signals that triggered detection.
Free plan: 1,000 checks per month. No credit card required. Pro plan: $19/month for 25,000 checks. Higher-volume plans available for marketplaces and enterprise platforms. Every plan includes unlimited sites, full detection transparency, and API access.