trustcaptcha 3.0.0

TrustCaptcha – Privacy-first CAPTCHA solution for Rust. GDPR-compliant, bot protection made in Europe.
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![Crates.io](https://img.shields.io/crates/v/trustcaptcha)

# TrustCaptcha for Rust — GDPR-compliant, privacy-first CAPTCHA

Protect websites and apps against bots and spam with a privacy-first, EU-hosted CAPTCHA solution.


## What is TrustCaptcha?

TrustCaptcha combines proof-of-work, an AI bot-score and custom security rules to stop automated bot abuse — without image marking or puzzles

Key perks:
- **Privacy-friendly & GDPR-compliant** – data processed exclusively in Europe
- **No visual challenges** – users never label images or solve quizzes
- **Fully themable widget** – matches any brand and design and improves your user flow
- **Conversion-safe** – near-zero user drop-off compared to legacy CAPTCHAs

Read the full [TrustCaptcha product overview](https://www.trustcomponent.com/en/products/captcha) for technical details and the security concept.


## Get started

1. **Create an account:** [sign up / sign in](https://id.trustcomponent.com/en/signup).
2. **Choose a CAPTCHA:** pick an existing one or create a new one.
3. **Embed the widget:** implement the TrustCaptcha widget into your website or app.
4. **Validate result:** validate the CAPTCHA verification result in your backend.

Need a walkthrough? See the [Rust integration guide](https://www.trustcomponent.com/en/products/captcha/integrations/rust-captcha).


## Basic Rust integration

1. Install the dependency
```bash
cargo add trustcaptcha@^3.0
```

2. Retrieve the verification result
```rust
use trustcaptcha::trust_captcha::TrustCaptcha;

// 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
        error!("Failed to fetch verification result: {}", e);
        return Ok(HttpResponse::InternalServerError().json(json!({"error": "Captcha verification failed"})));
    }
};
```

3. Act on the result
```rust
// Act on the verification result
if !verification_result.verification_passed || verification_result.score > 0.5 {
    info!("Verification failed or bot score > 0.5 – possible automated request.");
}
```

Congratulations — you have successfully validated the result of the CAPTCHA!

**For detailed implementation instructions, [read the Rust integration guide](https://www.trustcomponent.com/en/products/captcha/integrations/rust-captcha).**


## Other pre-built integrations

TrustCaptcha ships ready-made integrations for popular stacks:
- Platforms like WordPress, Joomla, CraftCMS or Keycloak
- Frontends like JavaScript, Angular, React or Vue.js
- Backends like Node.js, PHP, Python, Java, Ruby, Rust, Go or DotNet
- Mobile Applications like iOS, Android, React Native or Flutter

[Discover all our pre-built Integrations](https://www.trustcomponent.com/en/products/captcha/integrations) on our website.


## Get support

Questions? We will be happy to help!
- Email: [mail@trustcomponent.com](mailto:mail@trustcomponent.com)
- Contact form: [reach the support team](https://www.trustcomponent.com/en/contact-us)