You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Cross-Session MessagingArea: what it touches
ImprovementsKind: in v2.1.224,
ImprovementsSection of the release
What
Sending a message or file to a name that matches a Remote Control session on your account no longer just fails. The tool now says such sessions are reply-only from here and can be messaged only after they message you first, and that the Remote send_message connector cannot reach these device-gated sessions. A hedged version of the message appears when the list of sessions could not be fetched.
Details
The ListAgents tool now also advertises ListPeers as an alias.
The cross-device recipient schema variant behind this sits on the remote-config flag tengu_harbor_kite, whose fallback here is off, or the CLAUDE_CODE_HARBOR_KITE environment variable.
Evidence
only in reply, after it messages you first
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
tengu_harbor_kiteOff by default, switched on for this account
The shipped code defaults this off, and the flag server returned on for the one account this site reads on this version. That is the reading that makes the entry above worth a second look, and it still says nothing about your account.
This account: on · anonymous baseline: on · compiled default in v2.1.224: off
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.
Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading movedThe flag server now returns off for tengu_harbor_kite, read as this account.A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading movedThe flag server now returns on for tengu_harbor_kite, read as this account.A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading movedThe flag server now returns nothing at all, having stopped carrying it for tengu_harbor_kite, read as this account.A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's release notes agreeAdded cross-session SendMessage: Claude Code sessions can now message each other, on any of your machines, with ListAgents to discover them…
The name it cites is new in this buildNew in this build: CLAUDE_CODE_HARBOR_KITE
