InlineDoubt

InlineDoubt lets you ask doubts about any specific line in an AI answer — without opening a new tab, without scrolling, without losing your place. HOW IT WORKS: → Hover any line in an AI chat answer → A bubble appears on the right side of that line → Click it, type your doubt in plain English → AI explains that exact line — right there, inline FEATURES: ✓ Figma-style comment threads on every line ✓ Ask follow-up questions in the same thread ✓ Mark doubts as Resolved when you understand ✓ Add your own notes to any AI answer ✓ All doubts saved in the right sidebar panel ✓ Click any saved doubt to jump back instantly ✓ Remove or edit any doubt anytime On Claude.ai and Perplexity, InlineDoubt uses your existing login session directly — no setup, no API key, unlimited and free. On ChatGPT, Gemini, DeepSeek, Grok, and Meta AI, it uses a free API key you can generate in about 30 seconds — no card, no subscription, never expires.