This host serves an HTTP API. There is no website here.
Heatrail is an advisory fraud signal for e-commerce. A shop asks this API to score a checkout it is already processing, and gets back a number and machine-readable reasons. The answer is advice: Heatrail never blocks, delays or cancels a purchase, and the integration applies a hard 800 ms budget and fails open, so this service being down cannot stop a sale.
Raw e-mail addresses and phone numbers never reach this host. They are hashed inside the shop, under a key that stays there, before the request is sent.
/v1/health — liveness/disclosure — the public, customer-facing description of what is processed and why/.well-known/security.txt — coordinated disclosure policy (RFC 9116)
Authenticated endpoints require an HR1-signed request. An unsigned or unknown caller gets
a generic 401 that says nothing about which part was wrong.
Found something? security@heatrail.eu — we will
not pursue good-faith research.