Chat33 is a comment-to-DM and direct message automation platform built on Meta's official API for Instagram and Facebook. When a user comments a set keyword on a post, Chat33 automatically sends them a personalized DM with a link or message within seconds. It also includes a unified social media publishing calendar that supports seven platforms: Instagram, Facebook, TikTok, YouTube, X, LinkedIn, and Bluesky. Chat33 offers a visual drag-and-drop flow builder, contact management with a built-in CRM, and real-time analytics for tracking clicks, opens, and conversions. It integrates as an MCP server with AI tools like Claude, ChatGPT, Cursor, and Codex, allowing AI agents to publish posts, build flows, and manage inboxes.