Retrieve custom data for entity
Use this endpoint when attempting to delete custom data where the key contains non-alphanumeric characters. Otherwise, use the standard API under Custom Data.
GET
Retrieve custom data for entity
Authorizations
All requests to the Cortex API need to provide an Authorization: Bearer <token> header, where <token> is an API key created in the Settings page of your workspace.
Query Parameters
Entity tag (x-cortex-tag), supports non-alphanumeric characters
When set, returns the entity's value at this key. Otherwise, returns all custom data key/values for the entity.
Last modified on September 29, 2026