SDX Engine is now deprecated and has been replaced by SDX DRAST
SDX Engine replaces Drupal's Twig template engine with a structured data pipeline. Instead of producing HTML strings, the engine outputs typed JSON that React, Vue, or Svelte components consume directly. Write block.tsx instead of block.html.twig, and your framework component receives structured props instead of pre-rendered markup.
Streamable HTTP transport and OAuth 2.1 metadata for remote MCP clients. Bridges the MCP module's JSON-RPC handler to web-based AI clients with CORS and OAuth discovery.