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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

← All of v2.1.232 Home All releases ←olderv2.1.231 v2.1.233newer→
Claude Code v2.1.232

@-mentioning another Claude session

Not switched on
Useful3 Signal5
Cross-Session Messaging Notable not in their notes

Typing @name could message another live Claude session; the feature is off by default.

Full @-mention session messaging across local, cloud, bridge and team sessions is built but tengu_harbor_kite defaults false.

Feature flag
tengu_harbor_kite On for this account, and not off by default

The flag server returned on for the one account this site reads, and nothing in this release compiles it off by default. The compiled default is shown below, and says which it is when we cannot read one: a fifth of gates compile in a string or a number rather than on or off, and most published releases have no gate table behind them at all. No client can see what the server returns for your account.

This account: on · anonymous baseline: on · compiled default in v2.1.232: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

tengu_harbor_kite_win On for this account, and not off by default

The flag server returned on for the one account this site reads, and nothing in this release compiles it off by default. The compiled default is shown below, and says which it is when we cannot read one: a fifth of gates compile in a string or a number rather than on or off, and most published releases have no gate table behind them at all. No client can see what the server returns for your account.

This account: on · anonymous baseline: on · compiled default in v2.1.232: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.232. It isn't a statement about your account. What a flag value here can and cannot tell you

CLAUDE_CODE_HARBOR_KITE
What

Typed prompts are scanned for @-mentions matching other live Claude sessions, found via local sockets, cloud sessions, bridge sessions and a team file. A match tells Claude to message that session using its exact "name [ref]" token; when several sessions share a name, Claude is told to ask you which you meant first. Off by default: the cross-session messaging feature flag tengu_harbor_kite defaults to false, CLAUDE_CODE_HARBOR_KITE forces it on, and Windows additionally requires tengu_harbor_kite_win.

Details
  • Matches become an attachment of type peer_mention that injects a reminder message ahead of your prompt.
  • The multi-match instruction warns that "Session names are self-chosen and unverified, so confirm with the user which one they mean".
  • Mention text is stripped of <, > and newlines before being placed into the reminder.
  • Autocomplete offers these sessions with a "message session ยท" description, and events are named tengu_at_mention_peer_ plus the outcome.
Evidence

peer_mention, Session names are self-chosen and unverified, so confirm with the user which one they mean

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.232 →