Secure Your iOS App with Apple App Attest

// 1. Initialize Grantiva (no API key needed!)
let grantiva = Grantiva()

// 2. Request attestation
let result = await grantiva.attest()

// 3. Use the secure JWT token
if let token = result.token {
    // Token contains device risk score and custom claims
    api.setAuthToken(token)
    
    // Access device intelligence
    print("Risk Score: \(result.riskScore)")
    print("Custom Claims: \(result.claims)")
}

// Express.js middleware example
app.use(grantiva.authenticate());

// Protected route with automatic validation
app.get('/api/secure', (req, res) => {
    // Device already verified!
    const { riskScore, deviceId, claims } = req.device;
    
    if (riskScore > 50) {
        return res.status(403).json({ 
            error: 'High-risk device detected' 
        });
    }
    
    // Process request with confidence
    res.json({ data: 'Secure data' });
});