MarkIt builds AI agents for trade compliance that operate within existing professional workflows such as Excel, PDFs, and broker portals. The platform helps suppliers, brokers, and OEMs with product classification, tariff management, and customs issue resolution to reduce errors and streamline global trade operations. It positions itself as helping companies save money on tariffs and avoid costly compliance mistakes. MarkIt was founded in 2025 and is part of Y Combinator's Fall 2025 batch.