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Arcjet Review

Arcjet provides runtime security solutions designed to protect AI agents from prompt injections, data leaks, and unauthorized actions.

shipped Sep 21, 2026researchpaid
Domain rating71Monthly visits730/mo
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Arcjet — product screenshot

Why it matters

1Offers SOC 2 Type II compliance.
2Integrates with 18 distinct platforms and frameworks including Next.js, Flask, and CrewAI.
3Maintains a privacy policy at https://arcjet.com/privacy.
4Guarantees user data is never used for training purposes.

About Arcjet

Business Model
Subscription SaaS
Headquarters
USA
Platforms
Web
Target Audience
Developers and organizations using AI agents

Pricing Plans

Standard
Contact for pricing / monthly
  • • Real-time protection
  • • Compliance reporting
  • • Integration support

Screenshots

overview

What is Arcjet?

Arcjet is a runtime security tool that enables developers to enforce security policies across their applications immediately. It is designed to protect AI agents from prompt injections, data leaks, and unauthorized actions, ensuring safe operations within code paths.

features

Key Features of Arcjet

Arcjet offers a suite of features focused on securing AI applications and agents at runtime. These capabilities are designed to provide immediate policy enforcement and protection against common AI-specific vulnerabilities.

  • Prompt injection detection
  • Data loss prevention
  • Abuse protection
  • Budget control
  • Real-time security policies

use cases

Who Should Use Arcjet?

Arcjet is primarily intended for developers and organizations that deploy AI agents and applications. Its features are tailored to address the unique security challenges associated with AI workflows.

  • Developers building AI applications requiring robust security measures.
  • Organizations needing protection against unauthorized actions in AI agents.
  • Teams seeking to ensure compliance for AI workflows and data handling.

how to use

How to Use Arcjet

Arcjet integrates directly into application code paths to enforce security policies. Developers can utilize its API and SDKs to implement protections against prompt injections and data leaks.

  • 1Integrate Arcjet SDKs into existing application frameworks (e.g., Next.js, Flask).
  • 2Define and configure real-time security policies for AI agents.
  • 3Deploy policies to protect against prompt injections and data loss.
  • 4Monitor AI agent operations for compliance and unauthorized actions.
  • 5Utilize API documentation at https://docs.arcjet.com/ for detailed implementation guides.

pricing

Arcjet Pricing & Plans

Arcjet operates on a paid subscription model. Specific pricing details for its 'Standard' tier are available upon direct contact with the vendor.

  • Standard: Contact for pricing

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Pros

  • +Direct integration into application code paths for immediate policy enforcement.
  • +Specialized protection against AI-specific threats like prompt injections and data leaks.
  • +Offers SOC 2 Type II compliance, indicating adherence to security standards.
  • +Guarantees that user data is never used for training purposes, enhancing privacy.
  • +Supports a wide range of frameworks and platforms, including Astro, Next.js, and CrewAI.

Cons

  • −Pricing details are not publicly disclosed, requiring direct contact for information.
  • −Requires integration into existing code paths, which may involve development effort.
  • −Focuses specifically on runtime security, not broader conversational AI guardrails like some competitors.

Similar Tools

Arcjet vs Competitors

Arcjet differentiates itself within the AI security landscape by offering a managed runtime security solution that integrates directly into application code paths. This contrasts with open-source libraries or gateway-based solutions.

1
LLM Guard↗

Provides a modular, open-source toolkit for detecting and sanitizing sensitive content and prompt injections in LLM inputs and outputs.

Unlike Arcjet's managed service, LLM Guard is a library you integrate directly into your application code, offering more control over the detection logic but requiring self-management and tuning.

2
NVIDIA NeMo Guardrails↗

Enables developers to add programmable guardrails to conversational AI applications to control behavior, prevent unsafe outputs, and manage tool use.

While Arcjet focuses on runtime security policies, NeMo Guardrails provides a framework for defining and enforcing conversational logic and safety, which can be more extensive for agent behavior but requires deeper integration into the LLM application's flow.

3
Trylon Gateway↗

An open-source, self-hosted AI Gateway that acts as a proxy to enforce guardrails against prompt injections, toxic responses, and data leaks for LLM applications.

Unlike Arcjet's direct integration into code paths, Trylon Gateway operates as an inline proxy, providing a centralized enforcement point at the network layer, which can simplify deployment but requires managing the gateway infrastructure.

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