Returns all available contact filter properties that can be used in sequence step conditions. Each property includes its supported operators and, for enum-like properties, the allowed values.
This is a static discovery endpoint — the response does not depend on user data or any specific sequence.
API key passed in the X-API-Key header
Dictionary of property definitions keyed by property name
Describes a single contact filter property available for sequence step conditions. Each property defines which operators can be used and, for enum-like properties, the allowed values.