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Application Security🔴Developer
A

Arcjet

Runtime application security that ships inside your code: bot detection, rate limiting, prompt-injection protection, PII redaction, and email validation as SDK building blocks.

Starting at$0
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💡

In Plain English

Runtime application security that ships inside your code: bot detection, rate limiting, prompt-injection protection, PII redaction, and email validation as SDK building blocks.

OverviewFeaturesPricingUse CasesFAQ

Overview

Runtime application security that ships inside your code: bot detection, rate limiting, prompt-injection protection, PII redaction, and email validation as SDK building blocks.

🎨

Vibe Coding Friendly?

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Difficulty:intermediate

Suitability for vibe coding depends on your experience level and the specific use case.

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Key Features

Feature information is available on the official website.

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Pricing Plans

Free

$0

    Pro / Business

    Paid tiers

      Enterprise

      Contact sales

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        Best Use Cases

        🎯

        Protecting SaaS sign-up and login from bots and credential stuffing

        ⚡

        Adding prompt-injection and PII safeguards to LLM endpoints

        🔧

        Enforcing per-tier rate limits without leaving application code

        🚀

        Validating disposable/free email addresses at signup

        Pros & Cons

        ✓ Pros

        • ✓Security policy lives in code, reviewable in pull requests
        • ✓Low latency thanks to in-process WebAssembly execution
        • ✓First-class primitives for AI-specific risks (prompt injection, PII, spend)
        • ✓Generous free tier suitable for early-stage startups
        • ✓Strong DX for Next.js and edge/serverless runtimes

        ✗ Cons

        • ✗Library model means each app/service needs the SDK integrated
        • ✗Not a drop-in replacement for a full CDN-level WAF
        • ✗Smaller IP/bot dataset than incumbents like Cloudflare or Akamai
        • ✗Newer product — fewer compliance certifications than legacy WAFs
        • ✗No MCP surface yet for agent-driven security operations

        Frequently Asked Questions

        How much does Arcjet cost?+

        Arcjet pricing starts at $0. They offer 3 pricing tiers.
        🦞

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        Quick Info

        Category

        Application Security

        Website

        arcjet.com
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        More about Arcjet

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