CaptchaKit

Lightweight and asynchronous Swift package for server-side verification of various CAPTCHA tokens.

Services

• Google reCAPTCHA¹
• hCaptcha²
• Cloudflare Turnstile³

Installation

Add CaptchaKit to your project's dependencies in Package.swift:

.package(url: "https://github.com/mikuwithbeer/CaptchaKit.git", from: "2.0.0")

Usage

1. Create a reusable client instance:

   import CaptchaKit
   
   let client = CaptchaKit.Client(
     CaptchaKit.Config(
       strategy: .turnstile,
       secret: "your-secret-key"
     )
   )

2. Verify token with existing client:

   let isValid = await client.isValid("user-token")
   if !isValid {
       // Unauthorized!
   }

   Alternatively, you can verify with metadata:

   if let verification = try? await client.verifyDetails("user-token", ip: "100.200.255.1") {
       print("Verified for \(verification.host) at \(verification.date)")
   }

Appendix

This project is licensed under the BSD-2-Clause Plus Patent License⁴.

Footnotes

1. https://developers.google.com/recaptcha ↩

2. https://www.hcaptcha.com ↩

3. https://www.cloudflare.com/products/turnstile/ ↩

4. https://spdx.org/licenses/BSD-2-Clause-Patent.html ↩