3-in-1 free toolkit for academic writing with AI: 🔬 Hallucination & Fact Checker — flags fabricated citations, unverified claims, bad statistics, and methodology issues in your paper text. Color-coded findings with severity scores. 🤖 AI Content Detector — perplexity + burstiness analysis with section-by-section breakdown showing exactly which paragraphs read as AI-generated. ✍️ AI Humanizer — 3 strength modes, preserves citations & technical terms. Privacy-first: uses your own API key.