Adyen Webhooks

Verifiable

Adyen's payment-event webhook delivery service. Not a crawler; POSTs notifications to merchant endpoints. Adyen documents its egress domain for DNS-based allowlisting rather than a static IP list, since its outbound IPs change over time.

Operated by Adyen · Official documentation

User agents

Patterns this directory matches, with real observed strings.

regexAdyen HttpClient
observedAdyen HttpClient 1.0

How to verify

Reverse-DNS check a client IP

dig -x <client-ip> +short   # expect a hostname matching *.out.adyen.com

Reverse-DNS suffixes: *.out.adyen.com

Good Bot Practices scorecard

Identifies honestly
Stable UA token documented (1 pattern)
Verifiable
Verifiable
Respects robots.txt
Service traffic you configured — robots.txt does not apply
Behaves
Crawl-rate behavior is operator-declared; not machine-verifiable from this dataset
Reachable operator
Operator and documentation published

Measured against the Good Bot Practices.