Rust CAPTCHA Integration

Create a user account or log in with an existing one. Then create a new CAPTCHA or pick an existing one. If you want to try TrustCaptcha first, every plan comes with a 14-day free trial.

The CAPTCHA overview page shows your site key and license key, and you create your API key there. Add your website’s domains to the authorized domains in the CAPTCHA security rules so they can use your CAPTCHA.

Integrate the CAPTCHA widget into your website or app. The CAPTCHA widget guide in our documentation has step-by-step instructions.

The CAPTCHA widget will then be displayed on your website or app:

Pre-built frontend integrations
Our pre-built frontend integrations add the CAPTCHA widget to your website or application. If there is none for your frontend technology yet, your developers can integrate the widget themselves using our documentation or ask our support team for a pre-built integration.

The following steps show how a Rust backend fetches the CAPTCHA verification result from our server and decides what to do with it. For the full instructions, read the CAPTCHA integration guide for Rust in our documentation.

First, install our TrustCaptcha Rust dependency:

cargo add trustcaptcha

Fetch the verification result from our server with the verification token and your API key:

// Retrieving the verification result
let trust_captcha = TrustCaptcha::builder("<your_api_key>").build()?;
let verification_result = match trust_captcha.get_verification_result("<verification_token_from_your_client>").await {
  Ok(result) => result,
  Err(e) => {
    // Fetch verification result failed - handle error
    return;
  }
};

Based on the verification result and your own requirements, decide how to proceed:

// Act on the verification result
if !verification_result.verification_passed || verification_result.score > 0.5 {
  // Verification failed or bot score > 0.5 - possible automated request
}

Need detailed information about the Rust CAPTCHA integration?
Our Rust CAPTCHA integration guide has the detailed instructions, and our CAPTCHA samples repository on GitHub has a complete integration example.

Other backend technology instead of Rust?
If you run something other than Rust on your server, or have several backends, pick a different integration here. If we have no pre-built integration for your backend technology yet, your developers can integrate the CAPTCHA verification themselves using our documentation or ask our support team for a pre-built integration.

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