UI Verify is a visual regression testing tool that integrates with Playwright, Storybook, and Vitest to catch UI regressions before they merge. An AI judge analyzes pull request diffs to distinguish intended design changes from real regressions, so teams review decisions rather than pixel diffs. It includes an MCP server that lets AI coding agents like Claude Code, Codex, and Cursor inspect diffs, accept or deny changes, and push fixes autonomously. UI Verify captures only the screens affected by a change and carries unchanged screens forward at a reduced snapshot cost, keeping usage efficient on its free and paid tiers.