Customer.io Track Region API
Determine whether your account and data are hosted in the US or EU data center using your [Track API Key](https://fly.customer.io/settings/api_credentials).
Determine whether your account and data are hosted in the US or EU data center using your [Track API Key](https://fly.customer.io/settings/api_credentials).
Every API here is available over the APIs.io API and to AI agents over MCP.