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@arcjet/next

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@arcjet/next

Arcjet SDK for the Next.js framework

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npmnpm
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1.0.0-beta.11
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17K
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@arcjet/next

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Arcjet helps developers protect their apps in just a few lines of code. Bot detection. Rate limiting. Email validation. Attack protection. Data redaction. A developer-first approach to security.

This is the Arcjet SDK for the Next.js framework. Find our other SDKs on GitHub.

Example app

Try an Arcjet protected app live at https://example.arcjet.com (source code).

Features

Arcjet security features for protecting Next.js apps:

  • 🤖 Bot protection - manage traffic by automated clients and bots.
  • 🛑 Rate limiting - limit the number of requests a client can make.
  • 🛡️ Shield WAF - protect your application against common attacks.
  • 📧 Email validation - prevent users from signing up with fake email addresses.
  • 📝 Signup form protection - combines rate limiting, bot protection, and email validation to protect your signup forms.
  • 🕵️‍♂️ Sensitive information detection - block personally identifiable information (PII).
  • 🚅 Nosecone - set security headers such as Content-Security-Policy (CSP).

Quick start

This example will protect a Next.js API route with a rate limit, bot detection, and Shield WAF.

You can also find this quick start guide in the docs.

What is this?

This is our adapter to integrate Arcjet into Next.js. Arcjet helps you secure your Next web application. This package exists so that we can provide the best possible experience to Next users.

When should I use this?

You can use this if you are using Next.js. See our Get started guide for other supported frameworks.

Install

This package is ESM only. Install with npm in Node.js:

npm install @arcjet/next

Use

import arcjet, { shield } from "@arcjet/next";
import { NextResponse } from "next/server";

// Get your Arcjet key at <https://app.arcjet.com>.
// Set it as an environment variable instead of hard coding it.
const arcjetKey = process.env.ARCJET_KEY;

if (!arcjetKey) {
  throw new Error("Cannot find `ARCJET_KEY` environment variable");
}

const aj = arcjet({
  key: arcjetKey,
  rules: [
    // Shield protects your app from common attacks.
    // Use `DRY_RUN` instead of `LIVE` to only log.
    shield({ mode: "LIVE" }),
  ],
});

export async function GET(request: Request) {
  const decision = await aj.protect(request);

  if (decision.isDenied()) {
    return NextResponse.json({ message: "Forbidden" }, { status: 429 });
  }

  return NextResponse.json({ message: "Hello world" });
}

For more on how to configure Arcjet with Next.js and how to protect Next, see the Arcjet Next.js SDK reference on our website.

License

Apache License, Version 2.0 © Arcjet Labs, Inc.

Keywords

analyze
arcjet
attack
limit
nextjs
next

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Package last updated on 03 Sep 2025

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