We help you check factual claims against real sources—not vibes. Each run extracts claims from what you submit, finds relevant primary material where possible, and explains how the evidence supports each verdict.
Text and files you send are used to run this analysis. Retention and deletion follow our Privacy Policy. Do not submit information you are not allowed to share.
Public sources are documents and pages we can locate on the open web (or that you link to in your text). Personal primary sources are files you add to your own library (Pro)—for example paywalled studies or internal briefings—so verification can use material the public web search step cannot see.
Questions or feedback? support@primarysource.ai — we read every message.