Fraud Detection & Risk Scoring in Rust

Returns a score (0–100) and a human risk_level, plus the factors that drove it. Use risk_score() for the caller's IP.

let client = Client::new(std::env::var("IP_API_IO_KEY")?);

let risk = client.risk_score_ip("185.220.101.1").await?;

println!("{}", risk.score);      // 88.0
println!("{}", risk.risk_level); // "high"
if let Some(ip) = &risk.factors.ip {
    println!("{} {}", ip.is_tor_node, ip.is_datacenter);
}

if risk.score >= 75.0 {
    // block, or send to manual review / step-up auth
}

Same 0–100 scale, driven by email signals (disposable provider, invalid syntax). Use it to grade leads or gate sign-ups by address quality.

let risk = client.email_risk_score("user@mailinator.com").await?;

println!("{} {}", risk.score, risk.risk_level); // 90.0 high
if let Some(email) = &risk.factors.email {
    println!("{}", email.is_disposable); // true
}

Returns the underlying reputation data for an IP as a serde_json::Value — use it when you want the source signals rather than a computed score.

let reputation = client.ip_reputation("185.220.101.1").await?;
println!("{reputation:#?}");