How do I test Turnstile in local development?

Use the provided dummy sitekey '1x00000000000000000000AA' which always passes, allowing you to test your integration logic without solving real challenges.

Is server-side validation mandatory?

Yes, client-side implementation only renders the widget. You must verify the token via the Siteverify API on your server to ensure the challenge was legitimately passed.

Why use Turnstile over reCAPTCHA?

Turnstile is more privacy-focused, often invisible to users (no puzzles), and integrates seamlessly with Cloudflare's ecosystem without tracking users across the web.

What is the token expiration time?

Turnstile tokens are single-use and expire 5 minutes (300 seconds) after being generated. Your backend must validate them within this window.

How does this skill handle CSP issues?

It includes specific script-src and frame-src directives for challenges.cloudflare.com to ensure the Turnstile iframe and API scripts are not blocked by security policies.

Cloudflare Turnstile Integration

Name: Cloudflare Turnstile Integration
Author: jezweb

byjezweb

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Security & Testing

Integrates Cloudflare Turnstile bot protection into web applications to secure forms and prevent spam without user friction.

About

This skill provides specialized guidance for implementing Cloudflare Turnstile, a privacy-first, friction-free alternative to CAPTCHA. It enables developers to seamlessly integrate bot protection into modern stacks like React, Next.js, and Hono while ensuring robust security through mandatory server-side validation patterns. The skill addresses critical implementation details including CSP configuration, token lifecycle management, and automated troubleshooting for 12 common error patterns, making it an essential tool for securing logins, signups, and public-facing forms against automated attacks.

Key Features

Pre-configured Content Security Policy (CSP) and Wrangler configuration snippets
Built-in testing workflows using official dummy sitekeys and secret keys
91 GitHub stars
Comprehensive troubleshooting for 12 common Turnstile error codes and browser issues
Automated server-side Siteverify API validation templates
Standardized implementation patterns for React, Next.js, and Hono frameworks

Use Cases

Preventing spam submissions on public contact forms and lead generation pages
Migrating legacy reCAPTCHA implementations to a privacy-focused, puzzle-free alternative
Securing login and signup forms against automated brute-force and credential stuffing attacks

About

Key Features

Pre-configured Content Security Policy (CSP) and Wrangler configuration snippets
Built-in testing workflows using official dummy sitekeys and secret keys
91 GitHub stars
Comprehensive troubleshooting for 12 common Turnstile error codes and browser issues
Automated server-side Siteverify API validation templates
Standardized implementation patterns for React, Next.js, and Hono frameworks

Use Cases

Preventing spam submissions on public contact forms and lead generation pages
Migrating legacy reCAPTCHA implementations to a privacy-focused, puzzle-free alternative
Securing login and signup forms against automated brute-force and credential stuffing attacks