Server-Side Verification

After a user completes the captcha, verify the token on your server.

Request

HTTP

POST https://api.sloxly.com/v1/Captcha/verify.php
Content-Type: application/x-www-form-urlencoded

Parameters

Parameter	Required	Description
`secret`	Yes	Your captcha secret key
`token`	Yes	The token from the captcha widget

Success Response

JSON — 200

{
    "status": "success",
    "message": "Captcha verified"
}

Error Responses

Error	Cause
`Invalid secret key`	Secret key doesn't match any registered key
`Invalid, consumed, or expired token block`	Token already used, expired, or tampered
`Missing required fields`	`secret` or `token` not provided

Each captcha token can only be verified once. Do not retry verification with the same token.

Complete PHP Example

PHP

function verifyCaptcha($token, $secretKey) {
    $ch = curl_init("https://api.sloxly.com/v1/Captcha/verify.php");
    curl_setopt_array($ch, [
        CURLOPT_POST           => true,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_POSTFIELDS     => http_build_query([
            'secret' => $secretKey,
            'token'  => $token,
        ])
    ]);
    $resp = json_decode(curl_exec($ch), true);
    curl_close($ch);
    return ($resp['status'] ?? '') === 'success';
}

// Usage in form handler
if (!verifyCaptcha($_POST['sloxly_captcha_token'], 'YOUR_SECRET')) {
    die('Captcha verification failed');
}

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