Zephr includes an integration point which allows it to consume JSON from an external API as content metadata. That metadata is available as additional decision points in the Rule Builder.
Requests to a content API are made behind a double buffered cache, to protect site performance.
You can configure a content API connection within your Zephr Admin Console by navigating to Settings > Content API. If you have more than one Admin Console, this will need to be configured on each instance.