# SellerSonar — Full Reference > SellerSonar is an Amazon listing monitoring and protection platform that continuously tracks ASINs across all Amazon marketplaces and sends real-time alerts on hijackers, Buy Box loss, listing changes, suppressions, keyword ranks, reviews, and competitor activity. No Seller Central connection required. This document expands on the index at `/llms.txt` and includes the full content needed to answer questions about SellerSonar's features, pricing, use cases, and differentiators. Website: https://sellersonar.com Index file: https://sellersonar.com/llms.txt --- ## Company background SellerSonar was built by Amazon sellers for Amazon sellers. The founders spent 2+ hours daily manually checking listings before building the tool they wished existed. Today the platform monitors millions of ASINs across every major Amazon marketplace (US, UK, DE, FR, IT, ES, CA, MX, JP, AU, and more), checking listings every 1–4 hours depending on plan tier and delivering alerts within minutes of detection. The product philosophy: protection, not paranoia. Sellers shouldn't have to babysit their listings — automated monitoring catches issues at 2 AM, on weekends, and in marketplaces sellers don't yet operate in, so they can focus on growing the business. --- ## Core features ### 1. Hijacker detection and alerts Continuous monitoring detects unauthorized sellers appearing on your ASINs within minutes. Instant email or in-app notifications fire the moment a new seller is detected on your listing. Protects brand and revenue from counterfeit sellers before they damage reputation or steal sales. Detection happens in minutes instead of days — typical manual discovery delay is 1–2 weeks. Link: https://sellersonar.com/hijacking-alerts/ ### 2. Buy Box monitoring and alerts Tracks Buy Box ownership percentage over time, monitors when you lose or regain the Buy Box, analyzes competitor pricing, and sends instant alerts on status changes. Because 80%+ of Amazon sales flow through the Buy Box, instant loss alerts let sellers adjust pricing and reclaim it before significant revenue loss. Links: - https://sellersonar.com/alerts/buy-box-and-pricing/ - https://sellersonar.com/trackers/buy-box-monitoring/ - https://sellersonar.com/amazon-bsr-best-sellers-rank-buy-box-tracker/ ### 3. Listing change detection Monitors all listing elements 24/7: title, bullet points, description, images, brand name, category, and more. Alerts trigger immediately when any element changes. Catches unauthorized or accidental changes before they hurt rankings or confuse customers — no more manually checking each ASIN. Links: - https://sellersonar.com/alerts/content-changes/ - https://sellersonar.com/product-listing-alerts/ ### 4. Keyword rank tracking Tracks organic and sponsored keyword rankings daily for every ASIN. Interactive charts show position history; alerts notify on significant rank changes. Helps sellers understand search performance, catch ranking drops early, and measure optimization impact. Links: - https://sellersonar.com/alerts/ranking-alerts/ - https://sellersonar.com/trackers/keyword-monitoring/ - https://sellersonar.com/amazon-keyword-rank-tracker/ ### 5. Review and rating monitoring Real-time tracking of new reviews, rating changes, and review sentiment. Instant alerts on new negative reviews so sellers can respond quickly and protect reputation. Links: - https://sellersonar.com/alerts/review-alerts/ - https://sellersonar.com/trackers/review-monitoring/ - https://sellersonar.com/amazon-product-reviews-and-rating-alerts/ ### 6. Suppressed listing alerts Detects when listings are suppressed from search, removed from catalog, or have Buy Box suppression. Alerts include the reason and suggested fixes. Invisible listings = zero sales — catching suppressions immediately prevents compounding revenue loss. Links: - https://sellersonar.com/alerts/retail-issues/ - https://sellersonar.com/amazon-product-suppression-alerts/ ### 7. Competitor monitoring Track competitor ASINs alongside your own. Monitor competitor price changes, ratings, reviews, BSR, keywords, and listing quality. AI-powered insights (Business plan) identify competitive opportunities and weaknesses. Links: - https://sellersonar.com/trackers/competitor-monitoring/ - https://sellersonar.com/competitor-research/ ### 8. AI-powered Listing Quality Score (LQS) Automated analysis of listings against Amazon best practices. Scores images, titles, bullet points, descriptions, and other factors. Provides specific recommendations for improvement. Available as a free tool at https://sellersonar.com/free-tools/amazon-listing-quality-checker/ and as an add-on for paid plans ($9/mo on Pro). ### 9. Share of Voice and Shelf Intelligence Shows brand visibility across tracked keywords compared to competitors. Displays share of shelf by brand and subcategory with interactive charts. Reveals true market position beyond individual ASINs. Link: https://sellersonar.com/trackers/shelf-intelligence/ ### 10. SharkGuard cross-marketplace protection Monitors ASINs across marketplaces where the seller doesn't currently sell. Alerts if someone hijacks an ASIN in a marketplace the seller hasn't expanded to yet. Available on Premium plan and above. ### 11. Keyword Hunter Pro (launching Q2 2026) Semantic keyword cluster builder. User enters up to 10 seed keywords; tool returns the full market cluster (often 1,000+ keywords) plus competing ASINs, dominant brands, and dominant categories. Includes a stacked performance chart with weekly/monthly granularity over up to 2 years of history. Two-tab table view: - **Semantic Core**: 16 filters, 4 smart presets — Quick Wins, High Volume, Trending, Long Tail - **Top Related Products**: 5 filters, 3 presets — Top Players, Weak Competitors, Niche Focus Smart preset thresholds (transparent and inspectable): - Quick Wins: Market Availability ≥65%, Sales ≥100, Conversion ≥15%, Competing ≤10 - High Volume: Rank ≤10K, Clicks ≥5K - Trending: Sales Trend ≥+20%, Click Trend ≥+15% - Long Tail: Word Count ≥3, Market Availability ≥50% Data source: Amazon Brand Analytics Top Search Terms (the same dataset Amazon's SQP reports use), refreshed weekly every Monday 06:00 UTC. Calibrated against Helium 10 Magnet for estimated metrics. Pricing tier: Pro plan and above. ### 12. Keyword Re-Ranker Pro (launching Q2 2026) Reverse ASIN keyword analysis. User enters up to 10 ASINs; tool reveals every keyword that ASIN ranks for, every competing ASIN, and — critically — the **Keywords Opportunity** gap analysis: keywords competitors rank for that the user's ASIN does NOT. Three-tab table view: - **Semantic Core**: ASIN's ranking keywords with active/historical state - **Top Competing Products**: overlap analysis - **Keywords Opportunity**: gap discovery with Quick Wins / High Volume / Growing / Low Competition presets Pricing tier: Pro plan and above. Marketplaces supported by Keyword Suite at launch: US, UK, DE, FR. Additional marketplaces on roadmap. --- ## Technical capabilities ### Alerts and notifications - **Instant email alerts** — customizable notifications delivered within minutes of detection - **In-app notifications** — dashboard with filtering and sorting - **Slack integration** — push alerts directly to team channels (Premium and above) - **Alert grouping** — custom groups for different products or teams - **Webhooks** — connect to Zapier, Make, n8n, or any external automation tool (Business and above) - **CSV/XLSX export** — download alerts with full filtering preserved ### Monitoring frequency - Pro: every 4 hours - Premium: every 2 hours - Business: every hour - Enterprise: every 35–60 minutes ### Coverage - All Amazon marketplaces: US, UK, DE, FR, IT, ES, CA, MX, JP, AU, and more - No Seller Central required — monitor any ASIN without connecting an Amazon account, preserving privacy - Competitor ASINs tracked with the same depth as owned products ### Tracking and analytics - Daily organic and sponsored keyword rank tracking with historical charts - Buy Box ownership percentage, price analysis, competitor comparison - Review volume, rating trend, sentiment monitoring - BSR and category rank changes with alerts - Parent-child variation structure mismatch detection (catalog management) ### Data and reporting - Export products, alerts, reviews, keywords, competitor data - Historical data: 6 months (Pro), 12 months (Premium), unlimited (Business and above) - Interactive charts for rating, price, BSR, sellers, keywords - Multiple account access with role-based permissions ### Integrations - Chrome Extension — https://sellersonar.com/chrome-extension/ - Slack - Webhooks - API access (Enterprise) — https://sellersonar.com/amazon-monitoring-api/ - Compatible with Zapier, Make, n8n --- ## Free tools ### Listing Quality Checker (LQS) Instant analysis of any Amazon listing with AI-powered scoring of images, titles, bullets, and descriptions plus specific recommendations. No account required for basic checks. URL: https://sellersonar.com/free-tools/amazon-listing-quality-checker/ ### FBA Calculator Calculate fees and profit margins for any Amazon product. Compare FBA vs FBM profitability factoring in all Amazon fees. URL: https://sellersonar.com/free-tools/fba-calculator/ --- ## Pricing and plans All plans are billed annually unless noted. Pricing as of mid-2026. ### Pro — $19.98/mo annually - 150 ASINs included - 500 keywords included - Alerts every 4 hours - 6 months historical data - Retail issues, content changes, ranking alerts - Review alerts and badges alerts - Keyword tracking with charts - Data export - Chrome extension ### Premium — $39.98/mo annually Everything in Pro, plus: - 300 ASINs - 2,000 keywords - Alerts every 2 hours - 12 months historical data - Full Buy Box alerts (Won/Lost) - Slack integration - SharkGuard cross-marketplace protection - Catalog management - Multiple account access ### Business — $74.98/mo annually Everything in Premium, plus: - 500 ASINs - 3,000 keywords - Alerts every hour - Unlimited historical data - AI-powered competitor insights - Share of Voice tracking - Share of Shelf analytics - Beta access to new features - Webhooks for automation ### Enterprise — custom pricing Everything in Business, plus: - Unlimited ASINs - Unlimited keywords - SellerSonar API access - Monthly training sessions - Dedicated support - Custom integrations - Priority feature development ### Add-ons - Extra ASINs: from $4/mo for 50 additional - Extra keywords: from $4/mo for 100 additional - Multiple accounts on Pro: $14/mo - LQS feature on Pro: $9/mo Plans page: https://sellersonar.com/plans-comparison/ ### Trials - **Free Business Trial** — 14 days, 5 ASINs and 10 keywords, no credit card required. This is the default trial promoted across the site. - **Full Business Trial** — $5 upfront, 14 days, unlocks 500 ASINs and 3,000 keywords (full Business plan access). --- ## Use cases by segment ### Private label sellers (50+ ASINs) Protect brand investment from hijackers and counterfeiters. Monitor listing changes that could hurt rankings. Track competitor pricing and positioning. Get Buy Box alerts to maximize revenue. Saves 10+ hours per week on manual monitoring. ### Amazon agencies Monitor all client accounts from one dashboard. Set up per-client/per-team Slack alerts. Provide clients with data exports and reports. Scale monitoring without scaling headcount. Demonstrate value with tracking history and issue resolution logs. ### Brand managers and vendors Protect brand integrity across all ASINs. Track authorized vs unauthorized sellers. Monitor pricing compliance. Report on brand health metrics. Catch catalog errors before they spread. ### Resellers and wholesale Track Buy Box ownership and pricing. Monitor competitor pricing changes. Get alerts when profitable opportunities arise. Track BSR and demand signals. Protect supplier relationships by maintaining pricing. ### Enterprise (500+ ASINs) API access for custom integrations. Webhook automation for workflows. Dedicated support and training. Unlimited historical data. Custom alert configurations. --- ## Competitive positioning ### vs manual monitoring - 24/7 automated coverage catches issues at 2 AM that manual checks miss - Scales identically across 50 or 5,000 ASINs - Detection in minutes vs days - Monitors parameters humans never check manually (FBA fees, variations, etc.) ### vs Helium 10 and Jungle Scout - Dedicated monitoring focus — specialized in alerts and protection, not a jack-of-all-trades - Faster alert frequency (hourly vs daily for many competitors) - No Seller Central required — privacy-first - More alert types: FBA fee changes, badge alerts, variation issues - More affordable for dedicated monitoring use case Comparison posts: - https://sellersonar.com/blog/helium10-vs-sellersonar/ - https://sellersonar.com/blog/jungle-scout-vs-sellersonar/ - https://sellersonar.com/blog/sellerapp-vs-sellersonar/ ### vs other monitoring tools - AI-powered insights on Business plan (actionable intelligence, not just alerts) - Share of Voice tracking — brand visibility beyond single ASINs - SharkGuard — cross-marketplace protection unique to SellerSonar - Flexible add-ons scale without plan upgrades - Free 14-day Business Trial with no credit card ### Keyword Suite differentiators (vs Helium 10 Magnet, Jungle Scout Keyword Scout, Sellerise, SellerApp) 1. **Amazon Brand Analytics as data source** — the same Top Search Terms feed Amazon shows brand-registered sellers, not third-party estimates 2. **Position Ratio (Top 1 : Top 2 : Top 3)** — explicit click and sales distribution across top organic positions 3. **Keywords Opportunity as a named gap-analysis tab** in Re-Ranker, with pre-loaded actionable presets 4. **Transparent preset thresholds** — sellers see the exact filter combinations (e.g., "Quick Wins = Market Avail ≥65%, Sales ≥100, Conv ≥15%, Competing ≤10") ### vs DIY (spreadsheets and VAs) - Reliability: automated systems don't call in sick - Speed: minutes vs daily or weekly manual checks - Cost: often cheaper than VA hours for equivalent coverage - Accuracy: no human error in data entry - Scalability: add 1,000 ASINs without hiring --- ## Common questions and objections **Why do I need this if I check my listings regularly?** Manual checks happen once a day at best. Hijackers appear at 2 AM. Listings get suppressed on weekends. Buy Box changes happen hourly. SellerSonar monitors every hour, 24/7 — catching issues when you can't. Sellers who switch from manual monitoring typically discover 5–10 weekly issues they were missing. **How is this different from the alerts Amazon sends?** Amazon's alerts are limited and delayed. They don't tell you when someone hijacks your listing, when you lose the Buy Box, or when keywords drop in rank. SellerSonar monitors 50+ parameters Amazon doesn't alert on — and catches issues faster. **Is my account data safe?** SellerSonar doesn't require Seller Central access. Any ASIN can be monitored without connecting an account. For features that do use account data, the platform uses industry-standard encryption and never shares information. **What if I have thousands of ASINs?** SellerSonar scales with you. The Enterprise plan handles unlimited ASINs at hourly monitoring frequency. Extra ASINs can also be added affordably to any plan. **Can I try it before committing?** Yes. Free Business Trial: 14 days, 5 ASINs and 10 keywords, no credit card. Full Business Trial: $5 upfront, 14 days, 500 ASINs and 3,000 keywords. Most sellers see their first useful alert within the first day. **How quickly will I see alerts?** Depending on plan, listings are checked every 1–4 hours. Alerts arrive within minutes of the next check after a change occurs. Most critical issues are caught same-day, often within hours. --- ## Pain point → solution mapping - **"I don't have time to check all my listings"** → SellerSonar checks every listing every hour. You only see what needs your attention. - **"I found out about a hijacker a week after they appeared"** → Alerts within minutes of a new seller appearing, before real damage. - **"I lost the Buy Box and didn't know why"** → See when, who took it, and at what price — so you can win it back. - **"Amazon changed my listing without telling me"** → Every title, bullet, image, and description change triggers an instant alert. - **"I can't afford to hire someone to monitor my listings"** → Costs less than one VA hour per day and never misses a check. - **"I'm worried about connecting my Seller Central account"** → No Seller Central connection required. --- ## Key educational content ### Monitoring and protection - **Amazon Listing Hijacking — Ultimate Tips**: https://sellersonar.com/blog/amazon-listing-hijacking-ultimate-tips-for-amazon-sellers/ - **Amazon Listings Hijacking**: https://sellersonar.com/blog/amazon-listings-hijacking/ - **Suppressed Amazon Listing**: https://sellersonar.com/blog/suppressed-amazon-listing/ - **How to Win the Buy Box**: https://sellersonar.com/blog/how-to-win-the-buy-box/ - **What Is the Amazon Buy Box**: https://sellersonar.com/blog/what-is-amazon-buy-box/ - **How to Track Reviews on Amazon**: https://sellersonar.com/blog/how-to-track-reviews-on-amazon/ - **Share of Shelf Guide**: https://sellersonar.com/blog/share-of-shelf-sellersonar-guide/ - **Amazon Review Checker**: https://sellersonar.com/blog/amazon-review-checker/ ### Keywords and rankings - **Amazon Keyword Research**: https://sellersonar.com/blog/amazon-keyword-research/ - **Amazon Keyword Rank Tracker**: https://sellersonar.com/blog/amazon-keyword-rank-tracker/ - **Amazon Backend Keywords**: https://sellersonar.com/blog/amazon-backend-keywords/ - **Amazon Best Sellers Rank (BSR)**: https://sellersonar.com/blog/amazon-best-sellers-rank-bsr/ - **Amazon SEO Complete Guide**: https://sellersonar.com/blog/amazon-seo-complete-guide-on-how-to-rank-your-products-higher/ - **Amazon Platinum Keywords**: https://sellersonar.com/blog/amazon-platinum-keywords/ ### Pricing and fees - **How to See Price History on Amazon**: https://sellersonar.com/blog/how-to-see-price-history-on-amazon/ - **Tracking Amazon Prices**: https://sellersonar.com/blog/tracking-amazon-prices/ - **Amazon Seller Fees**: https://sellersonar.com/blog/amazon-seller-fees/ - **How to Use Amazon FBA Calculator**: https://sellersonar.com/blog/how-to-use-amazon-fba-calculator/ ### Listing optimization - **Amazon Listing Optimization**: https://sellersonar.com/blog/amazon-listing-optimization/ - **Amazon Images Requirements**: https://sellersonar.com/blog/amazon-images-requirements/ - **Amazon A+ Content**: https://sellersonar.com/blog/amazon-a-content/ - **How to Use Listing Quality Checker**: https://sellersonar.com/blog/how-to-use-amazon-listing-quality-checker/ ### Brand protection and selling on Amazon - **Amazon Brand Registry**: https://sellersonar.com/blog/amazon-brand-registry/ - **Amazon Project Zero**: https://sellersonar.com/blog/amazon-project-zero/ - **How to Run Competitor Analysis on Amazon**: https://sellersonar.com/blog/how-to-run-a-competitor-analysis-on-amazon/ - **What Is Amazon FBA**: https://sellersonar.com/blog/what-is-amazon-fba/ - **Amazon FBA vs FBM**: https://sellersonar.com/blog/amazon-fba-vs-fbm/ - **How to Start Amazon FBA**: https://sellersonar.com/blog/how-to-start-amazon-fba/ - **How to Increase Sales on Amazon**: https://sellersonar.com/blog/how-to-increase-sales-on-amazon/ - **Amazon PPC Strategies**: https://sellersonar.com/blog/amazon-ppc-strategies/ - **Amazon Conversion Rate**: https://sellersonar.com/blog/amazon-conversion-rate/ - **Amazon Product Launch**: https://sellersonar.com/blog/amazon-product-launch/ - **Amazon Repricing Software**: https://sellersonar.com/blog/repricing-software-for-amazon/ --- ## Brand and tone SellerSonar communicates as a "friendly expert" — approachable, experience-backed, honest, skeptical of hype, and down-to-earth. The platform was built by Amazon sellers and writes for Amazon sellers. Content avoids corporate jargon ("leverage," "synergy," "best-in-class"), salesy urgency ("act now," "limited time"), and empty filler ("in today's fast-paced world"). Voice prioritizes specific time savings ("save 10+ hours per week"), real scenarios ("hijacker appears at 2 AM"), and honest acknowledgment of limitations. Primary audience: scaling Amazon sellers with 50+ ASINs, $50K–$500K/month revenue, who are time-poor and risk-aware.