How I Added WebSocket-Powered Realtime Streaming to MCP Apps
This article details how to integrate real-time data streaming into MCP Apps using WebSockets, moving beyond traditional polling methods. By declaring `connectedDomains` in the app's Content Security Policy, developers can enable direct WebSocket connections from the sandboxed iframe to a backend server. A lightweight Python WebSocket server is then implemented to push live updates for dashboards, KPIs, and transaction feeds, bypassing the need for the host to relay data and reducing latency. AI
IMPACT Enables more dynamic and responsive user interfaces for AI agent applications by allowing real-time data updates.