metadata

The metadata of a chat message. Allows for attaching extra info to a message, which can be used for various features such as animations, effects, or simply to link it to other resources such as images, relative points in time, etc.

Metadata is part of the Ably Pub/sub message content and is not read by Ably.

This value is always set. If there is no metadata, this is an empty object.

Do not use metadata for authoritative information. There is no server-side validation. When reading the metadata treat it like user input.