Rosey by InSummary is an independent AI-powered document quality assurance platform designed to verify claims, numbers, and calculations in financial, scientific, and technical documents. It deploys domain-expert reviewers trained on corporate data to simulate audience reactions and surface factual errors before distribution. Rosey integrates directly into existing editors like Microsoft Word and PowerPoint using tracked changes and comments, requiring no new workflow tools. It is also available as an MCP server, allowing it to run inside ChatGPT, Claude, or custom AI agents. In benchmark testing against frontier LLMs on a financial earnings report, Rosey caught four times more errors with a 4.1 times lower false-positive rate.