Under the hoodTier: how much it should matter to you
3Useful: my rating, 1 to 5
5Signal: worth watching, 1 to 5
ProtocolArea: what it touches
Internal ChangesKind: in v2.1.323,
What probably matters to youSection of the release
What
Claude Code already recognised messages marked as notes of what was said aloud on a voice call. This release adds rules around them.
New capabilities: voice_call_talk_line_v1 and withdrawn_files_note_v2 are added to the list of capabilities a Claude Code process announces, after start_shell_task_v1.
Capability requirement: the description for voice-call notes now says to send a note only to a process that lists voice_call_talk_line_v1. Such a process stores the note in a form older builds do not send to a model, and sends no note to the Remote Control event lane.
Hidden messages: a check that decides which messages are shown now hides user messages whose origin is voice-call.
Why
This is continuing groundwork for using Claude Code alongside a voice call. For programs built on Claude Code, it sets out which processes may receive voice-call notes, so older builds are not sent notes they would pass on to the model.
