zeno

Invisible Mode

Zeno Invisible Mode validates the user in the background without any user interaction.

How it works

1. Provide the widget.
2. Programmatically trigger the challenge using the API.
3. The widget solves the PoW using the Web Worker (typically < 100ms for low difficulty).
4. Returns the token silently.

Usage

Do not emit the <zeno-widget> tag. Instead, import the class.

import { Zeno } from 'https://cdn.jsdelivr.net/gh/zeno-security/zeno@latest/dist/client/zeno.min.js';

async function protectAction() {
    const zeno = new Zeno({
        siteKey: 'YOUR_KEY',
        apiEndpoint: 'https://your-worker/api'
    });

    try {
        const token = await zeno.solve();
        // Submit token with your form data
    } catch (error) {
        console.error("Bot detected or timeout", error);
    }
}

“Quantum” Verification

In this mode, the “observation” happens so quickly the user doesn’t notice, but the computational cost remains real for any bot attempting to automate this at scale.

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