TrustCheck — browser extension that flags dubious claims in any article, video, or social post with citations and a hype score
A one-click browser extension that, on any YouTube video, news article, tweet, or PDF, extracts the claims, verifies them against independent sources, and overlays a credibility score plus a list of 'this is fishy because…' notes.
News-consuming adults, students, and professionals tired of being misled by viral content
- One-click verification on any web page or video — extracts claims and returns verdicts with linked sources
- Per-claim labels: confirmed / plausible / misleading / false / unverifiable, plus a 0–10 'BS score' for the whole piece
- Hype-signal scan: flags financial incentives, undisclosed sponsorships, and 'guru' framing patterns
- Shareable 'verification card' you can attach when reposting a story, so your friends see the receipts too
The trending repo shows AI claim-by-claim fact-checking with sources is technically mature; misinformation on YouTube and social platforms is at record highs, and consumers have no fast way to vet what they see.
Multiple fact-check browser extensions already exist (NewsGuard, The Factual, Logically, TrustedNews, CaptainFact, etc.) and PCMag/The Trusted Web publish recurring round-ups, confirming sustained user interest, though installation bases remain niche and the GitHub trending "★ 79" claim could not be independently verified.12 Browser Extensions to Help You Detect and Avoid Fake News ↗Is That True? 4 Browser Extensions to Help You Spot Fake News ↗
The space is a red ocean: NoLie (Chrome ext. extracting claims + credibility score), VeriTube, Youtube FactCheck, PopUpFactCheck, Critique AI, TrustServista, FakerFact, and NewsGuard all directly overlap with the TrustCheck pitch on at least one surface (YouTube, articles, scores, claim extraction).NoLie — AI-Powered Content Credibility & Fact Verification ↗VeriTube — AI Fact Checker for YouTube Videos ↗PopUpFactCheck Chrome Extension Brings Real-Time Fact-Checking to YouTube ↗Autonomous Fact-Checking - Critique AI ↗
TrustServista prices at $2.99/mo (300 free URLs then unlimited), most extensions are free with daily limits or freemium, and consumer willingness-to-pay for general fact-checking tools is weak — NewsGuard is the rare exception already entrenched in that small paid segment.12 Browser Extensions to Help You Detect and Avoid Fake News ↗PopUpFactCheck Chrome Extension... ↗Chrome Extension Pricing Strategy. What to Charge and Why ↗
Misinformation concern is persistent and accelerating with generative AI content on YouTube, social, and PDFs; demand for vetting tools is structural rather than trend-driven, and PCMag/The Trusted Web have covered the category for years.12 Browser Extensions to Help You Detect and Avoid Fake News ↗
Working reference implementations already exist as open-source (NoLie was built as an internship project; Critique AI ships a browser extension with claim analysis and credibility scores), so an MVP is clearly buildable — the harder problem is LLM/API cost per claim and keeping source verification accurate at scale.NoLie — AI-Powered Content Credibility & Fact Verification ↗Autonomous Fact-Checking - Critique AI Documentation ↗