Postsight: AI fact-check and research for X

Fact-check, research, summarize, translate and copy posts on X with your own Claude, OpenAI or DeepSeek API key.

Postsight adds a small AI button to every post on X. One click gives you: - Verify: a verdict (accurate, misleading, false, opinion and more), a confidence score, claim-by-claim notes and the sources behind them, using live web search. - Research: background, key dated facts, who is involved and where people disagree. - Summarize: a one-line TL;DR and the substance, including threads, quoted posts, X Articles and linked news pages. - Translate: into your language, with links and mentions kept intact. - Explain: jargon, references, memes and irony made clear. - Reply ideas: three drafts in different tones to copy. Postsight never posts for you. - Ask: any question about the post. - Copy: the text, the link, or a ready-made quote. Bring your own key. Postsight works with Claude, OpenAI and DeepSeek. In Auto mode it picks a light, cheap model for simple jobs and a stronger, web-searching model for fact-checks, or you choose a model per post. Know what you spend. Every result shows tokens, web searches, cost and time. Set monthly budgets per provider and see how much is left and roughly how many tokens that buys. Reads what posts point to. Postsight reads X Articles and, with your permission, the news and blog pages a post links to, so a link-only post is not judged by its headline. Wallet cards (optional). Hover a wallet address or a .eth name in a post to see who is behind it: its names, linked profiles, reputation and security warnings, and for a token its market data, a test trade and who created it. The card also says whether the wallet belongs to the post's author. It uses public sources, needs no key and sends nothing until you hover. Private by design. Keys stay in your browser and go only to the provider you chose. There is no Postsight server and no tracking. Available in 12 languages.