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Arcjet · Concept

Shield WAF

Arcjet Shield is a managed WAF inside the Arcjet SDK. It studies request patterns over time and can block clients that cross a suspicious-traffic threshold.

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Syntax

const decision = await aj.protect(request);

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • OWASP Top 10
  • Arcjet SDK
  • fingerprint
  • threshold
  • bot protection
  • rate limiting
  • signup form protection

Source: Introduction to Arcjet Shield WAF | Arcjet Docs. Checked 2026-11-03.