Is it possible to validate a Webhook Event is registered / Trigger an event?

I integrated Stripe into our application. Now I need to make sure, our customers configured it correctly, so I can show a warning instead of the checkout form.

My first thought was, when a payment_intent.created comes to my webhook, I update some state in my database, that the webhook was receiving it, and before checkout, I will validate against this.

However, the customer can select specific events, which will be signaled to the webhook. If he doesn't have payment_intent.succeeded enabled, it will never been fired. And that's what I need to validate most specificaly.

So:

1. Is there a way, to validate, if the payment_intent.succeeded is redirected to the webhook (of course before a customer gets charged)?
2. Alternative: Is there a way to trigger an Event via API?

I know, I can trigger an Event via the CLI:

stripe trigger payment_intent.succeeded

But this doesn't help me in this case.

The Stripe CLI approach would work if your CLI instance was signed in to your customer's Stripe account or you could use their API keys. This would allow you to specify the live API key as well.

If you have the customer's API keys, you can use the Webhooks API. You can retrieve the webhooks for the customer's account and examine what events they are configured for. You can even update the webhook to listen for the payment_intent.succeeded event if it is not currently being listened to.