🤖 Cross-platform browser for automation testing: Cloudflare, Akamai, Kasada, Shape, DataDome, PerimeterX, hCaptcha, FunCaptcha, Imperva, reCAPTCHA, ThreatMetrix

Bot detection library that runs in the browser. Detects automation tools and frameworks. No server required, runs 100% on the client. MIT license, no usage restrictions.

Protect your website from bots with Prosopo Procaptcha

🕵‍♂ Bot detection tests for Puppeteer. Hide and seek!

An example Next.js application protected by Arcjet.

A drop-in replacement for puppeteer-core patched with rebrowser-patches. It allows to pass modern automation detection tests.

Fingerprint Pro Akamai Integration is responsible for proxying identification and JavaScript agent download requests that are performed on your Akamai infrastructure.

JavaScript based bot and automation detection library

An example Remix application protected by Arcjet.

Antibot Browser Agent

Trading Service Bot Library. Support gRpc Volume Bot, Bundler Bot, Sniping Bot, Copy Trading Bot, Wallet Tracker on raydium, pumpfun, meteora. Working on Solana & EVM Networks

Fingerprint Pro Fastly VCL Integration is responsible for proxying identification and JavaScript agent download requests that are performed on your Fastly infrastructure.

An example NestJS application protected by Arcjet.

Arcjet Model Context Protocol (MCP) server. Help your AI agents implement bot detection, rate limiting, email validation, attack protection, data redaction.

A privacy-first CAPTCHA built for humans (only). No tracking. No AI training. Just human verification.

Custom captcha for React based projects like Next.js, React JS, Express JS and more.

An example Next.js site protected by Arcjet bot detection middleware.

An example Express.js site protected by Arcjet bot detection, rate limiting, and Shield WAF.

Backend Security using Arcjet

An example Next.js form + server action protected by Arcjet bot detection, rate limiting, and Shield WAF.