@spectrum-ts/imessage package.
Message effects
Send bubble and screen effects with text, markdown, or attachments.
Chat renaming
Change the display name of a group chat.
Group avatars
Set, clear, and retrieve group chat icons.
Group membership
Add, remove, list, and leave group chat members.
Inbound group events
Handle membership and group metadata changes from other participants.
Inbound read receipts
Observe when recipients read messages sent by your agent.
Chat backgrounds
Set or clear a conversation background image.
iMessage Apps
Send and update customized iMessage App cards.
Native contact card sharing
Share the bot account’s own contact card in a chat.
Native message metadata
Read curated Apple delivery, formatting, attachment, and reaction fields.
Fetching attachments
Retrieve cloud attachments directly by iMessage GUID.
Tapback reactions
Map Spectrum emoji aliases to native iMessage tapbacks.