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Custom Properties

Extension mechanism for arbitrary key-value metadata not covered by the standard.

Custom Properties  

type: CustomProperties

A list of key/value pairs for custom properties. Implemented as array of type CustomProperty [].

Custom Property  

type: CustomProperty

PropertyTypeRequiredDescription
propertystringNoThe name of the key. Names should be in camel case–the same as if they were permanent properties in the contract.
The name of the key. Names should be in camel case–the same as if they were permanent properties in the contract.
valueAnyTypeNoThe value of the key.
The value of the key.


Last updated on November 1, 2026