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Arcjet · Concept

Rule mode

Arcjet rules use LIVE or DRY_RUN mode. DRY_RUN reports rule decisions but always leaves the overall result as ALLOW, so you can test protection before enforcing it.

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Syntax

fixedWindow({ mode: "LIVE" | "DRY_RUN", ... })

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  • LIVE
  • DRY_RUN
  • decision.results
  • isDenied()
  • multiple rules
  • single instance
  • astro.config.mjs
  • arcjet:client

Source: Arcjet SvelteKit SDK reference. Checked 2026-11-03.