Open-Source Fact-Checker for AI Agents: Verifies Claims Before Action

IndividualChannel546 · reddit · 2026-09-01

Addressing AI's tendency to be confidently wrong, the author built an open-source fact-checker that verifies claims against real-time sources, not model memory. It returns a truth score and a confidence score, along with sources. Crucially, it can verify internal documents (policies, schemas) against their citations, catching errors in private knowledge bases. The tool is MIT-licensed, runnable locally in a browser, and works as an MCP tool or over entire knowledge bases.

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