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Tool Review

Arcjet

Application security toolkit for rate limiting, bot detection, signup protection, WAF-style filters, email validation, and AI prompt protection. A practical abuse-prevention layer for small teams shipping public apps quickly.

Updated on May 27, 2026 Best for: Public web apps with forms, APIs, signups, AI routes, or expensive endpoints that need abuse controls fast. Security

Public web apps with forms, APIs, signups, AI routes, or expensive endpoints that need abuse controls fast.

Try Arcjet

Pricing

Arcjet pricing

hybrid

Arcjet combines monthly app plans with usage-based security checks, so model cost around the endpoints you actually protect.

Individual Featured

Solo builders and small apps adding first protection

Start here

$25

/ month / app

Entry plan for adding practical app-security controls to a single app.

  • 1 team member
  • 1 hour log retention
  • Email support
  • Usage fees apply
Startup

Production teams

$299

/ month / app

More support and log retention for teams shipping public apps.

  • 2 team members
  • 24 hour log retention
  • Email and Slack support
  • Usage fees apply
Growth

Scaling teams

$799

/ month / app

Higher support and retention for teams with more serious app-security needs.

  • 10 team members
  • 30 day log retention
  • Priority email and Slack support

Pricing notes

  • Individual starts at $25/month/app; Startup and Growth add more team/support/log-retention depth.
  • Usage fees are separate for protected requests, bot detection, advanced bot signals, email validation, PII detection, and prompt scanning.
  • Protect the routes that can burn money, collect spam, leak data, or create support pain first.

Capabilities

Feature highlights

Practical protections

  • Rate limiting, bot detection, Shield WAF, filters, signup form protection, and email validation cover common abuse paths.
  • PII detection and prompt scanning make it relevant for AI apps, not just traditional web forms.
  • SDK-first integration is friendlier for teams that want security controls inside app code.

How to use it well

  • Start with public forms, signups, login-adjacent flows, and expensive AI/API endpoints.
  • Pair it with good auth, authorization, secrets handling, and databasepermissions.
  • Measure blocked traffic and false positives instead of treating any security tool as set-and-forget.

Comparison-friendly facts

Arcjet in one screen

Abuse prevention

Strong coverage for bots, spam, rate abuse, fake signups, and expensive endpointprotection.

AI app security

Prompt scanning and PII detection make it more relevant for AI-built products than a generic captcha widget.

Setup effort

Moderate. You still need to choose the right routes and policies.

Scope

Not a replacement for secure auth, authorization, dependencyreview, or app architecture.

AI builder fit

Strong if you tell the coding agent exactly which forms and endpoints need protection.

Recent updates

Arcjet updates to track

May 27, 2026 Arcjet pricing high impact

Pricing refreshed with app plans and usage fees

Arcjet’s current pricing page lists Individual, Startup, and Growth app plans plus usage fees for protected requests, bot detection, prompt scanning, and other checks.

Source →

Arcjet is appealing because it focuses on the real-world nonsense small apps hit first: bots, scraping, fake signups, brute-force-style abuse, and wasted resources.

That makes it a practical security layer for the Secure Your App job, especially when your app was built quickly with AI and now has public endpoints on the internet.

What Arcjet is actually helping with

Arcjet is not the glamorous side of security. It is the practical side.

It helps protect:

  • signup flows
  • public forms
  • login-adjacent routes
  • API endpoints
  • AI prompt routes
  • expensive actions that should not be hammered for free

That coverage matters because bots do not wait until your architecture is elegant.

What it does not replace

Arcjet does not replace authentication, authorization, secure database permissions, dependency security, or thoughtful app design.

It is best thought of as an abuse-prevention layer that improves your odds around the public parts of the product.

My quick take

If your app is public and does anything even mildly valuable or expensive, Arcjet is easier to justify than a lot of bigger, vaguer “security platform” promises.

Start with the routes where abuse is cheapest for attackers and most expensive for you.

Further reading

arcjet.comArcjet pricing
docs.arcjet.comArcjet docs
arcjet.comBot protection
arcjet.comPrompt injection protection

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