Arcjet

In-app rate limiting and bot defence

PaidCode review, testing & securityarcjet.com

What it is

Security SDK that runs inside your application rather than at the edge, with adapters for Next.js, Node, Bun, Deno, SvelteKit, Remix, Astro, Fastify and NestJS. It provides rate limiting, bot detection, a shield WAF, email validation, PII redaction and prompt-injection detection, invoked per route as ordinary code.

Why it earns a slot

AI-generated API routes almost never carry rate limits, leaving a signup or LLM-proxy endpoint open to abuse and a surprise bill. A few lines per route caps it and blocks disposable-email signups.

Know before you commit

Priced per app plus per-request usage, and the free tier is gone as of 2026, so a multi-service project pays $25/mo for every service it protects.

Getting started

npm install @arcjet/next

Field notes

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Pricing snapshot

No free plan as of 2026; Individual $25/app/mo; Startup $299/app/mo; Growth $799/app/mo; usage fees on top at $5 per 1M requests plus per-feature rates such as $0.50 per 1M for bot detection; 15-day trial

Snapshots move fast — verify at checkout, and post a field note if it changed.

Drop into your Lovable chat

Evaluate Arcjet (https://arcjet.com) for this project, then use it only if it fits what we are already building.
Context: In-app rate limiting and bot defence. Security SDK that runs inside your application rather than at the edge, with adapters for Next.js, Node, Bun, Deno, SvelteKit, Remix, Astro, Fastify and NestJS. It provides rate limiting, bot detection, a shield WAF, email validation, PII redaction and prompt-injection detection, invoked per route as ordinary code.
Reviewer notes (general, not written for this codebase): AI-generated API routes almost never carry rate limits, leaving a signup or LLM-proxy endpoint open to abuse and a surprise bill. A few lines per route caps it and blocks disposable-email signups.
Watch out for: Priced per app plus per-request usage, and the free tier is gone as of 2026, so a multi-service project pays $25/mo for every service it protects.
Pricing: No free plan as of 2026; Individual $25/app/mo; Startup $299/app/mo; Growth $799/app/mo; usage fees on top at $5 per 1M requests plus per-feature rates such as $0.50 per 1M for bot detection; 15-day trial
Setup: npm install @arcjet/next
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

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