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Live BlackHart Risk Index (BRI) security scores for DeFi protocols and prediction markets, shown inline as you browse. BlackHart shows you how risky a DeFi protocol or prediction market is — before you interact with it. As you browse, BlackHart overlays the BlackHart Risk Index (BRI): a 300–1000 security score (higher is safer), shown inline on the pages you already use. It works across the places you meet DeFi and prediction markets — decentralized exchanges and lending apps, block explorers, token-data sites, wallet dashboards, and prediction-market platforms — so you can judge risk in context, without leaving the page. What you get: • Live BRI score chips on 100+ scored protocols and prediction markets, wherever they're referenced • Per-token risk on swaps, so you see the underlying protocol's risk before you sign • Risk chips on links and cashtags in social posts • A recent-hacks feed and alerts, so you hear about exploits early • A pre-transaction advisory that flags risky interactions — advisory only, it never blocks you • Click any chip to open the full security report at blackhart.io Free forever for live scores. Paid Starter and Pro plans raise daily limits and unlock the full REST API. Privacy: BlackHart reads pages locally only to detect which protocol or token is referenced — it never collects page content or your browsing history. Optional anonymous usage analytics (a random install ID and which supported sites showed a score) help us improve coverage. Your API key is stored on your device and used only to fetch your scores. We never sell your data. Full policy: https://blackhart.io/privacy
Jun 13, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.