Arcjet Guards runs security rules inside agent tool handlers, queue consumers, and workflow steps - where proxies and WAFs can't see.

What's new in Arcjet (2026-04-17). MCP server, a new AI coding agent plugin for Claude Code and Cursor, and new weekly security briefings via email.

The expertise required to apply security correctly can now live inside the agent, not inside the developer's head or a separate team's backlog.