What
A new internal function replaces <mention:ID> placeholders found in text with a readable form: '@Claude' for a mention of Claude, '@you' when the mention refers to the person viewing it, or a truncated '@viewer' name with an ID prefix for anyone else. Placeholders with IDs it doesn't recognize are left as-is.
Why
This lets text containing raw mention placeholders display as readable @-mentions instead of internal ID strings, similar to how @-mentions appear in chat apps.
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Added since
A small documentation edit on Control when Claude Tag responds touched a line naming @Claude after this was published.
To start Claude reading again, mention `@Claude` in the channel. A mention from a person reaches Claude even while Claude isn't reading the channel, and once Claude posts its reply, it reads the channel's messages again.claude-tag/users/when-claude-responds see the edit
Confirmed since
Anthropic's documentation has since written up @Claude, on Claude Code changelog.
* \[Claude Tag] Fixed `@Claude !restart` in a thread with its own session sometimes also posting a contradictory "this thread is handled by the channel session" noticechangelog see the edit
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up @Claude, on Claude Code changelog.