# Radar scores for multiple payment processors

Get a Radar risk score on your non-Stripe processed payments.

[Stripe Radar’s](https://docs.stripe.com/radar.md) AI model returns a risk score and recommendation in real-time, allowing you to apply Stripe’s risk evaluation expertise for your externally processed payments. You can request a risk evaluation at any time in the payment lifecycle–not only when you submit to the processor.

## Prerequisites

Before you request a risk evaluation on an externally processed transaction, you must:

- Create a [tokenized PaymentMethod](https://docs.stripe.com/api/payment_methods/create.md). We currently support only [card type](https://docs.stripe.com/api/payment_methods/create.md#create_payment_method-type) payment methods.
- Create a [Radar Session token](https://docs.stripe.com/radar/radar-session.md).
- Collect the customer email by [creating a Customer](https://docs.stripe.com/api/customers/create.md) or populating the [billing_details.email](https://docs.stripe.com/api/payment_methods/create.md#create_payment_method-billing_details-email) attribute in the payment method.

The following diagram shows your initial call to create a `PaymentEvaluation` and Stripe’s real-time response with the risk score.
A diagram showing the Payment Evaluation API sequence of interactions for a standard payment. (See full diagram at https://docs.stripe.com/radar/multiprocessor)