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.
Deploying application layer security in production can feel risky. Blocking rules, rate limits, and bot protections directly change how your system handles traffic and
Search for “Is CAPTCHA still effective?” and you will find plenty of confident answers. Most of them ignore how modern abuse actually works. CAPTCHA
Rate limiting is a foundational control in API security, abuse prevention, and distributed systems reliability. It determines how systems allocate finite capacity across users,
Introducing Arcjet prompt injection detection. Catch hostile instructions before inference. Works with Next.js, Node.js, Flask, FastAPI, and any JavaScript / TypeScript or Python application.
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