The fork notice is disabled on Windows and otherwise gated off unless CLAUDE_CODE_HARBOR_KITE is set.
A new note injected into the conversation tells the model that this session is a copy of another session that is still running, when the copy was made, and how to find and message the original. It is off by default: the path is disabled on Windows and otherwise falls back to tengu_harbor_kite being false, so it only runs if remote config or CLAUDE_CODE_HARBOR_KITE turns it on.
- The note is wrapped in
<fork-source>tags in the prompt. - Queued and pending prompts are checked first so the note is not added twice.
- Logs
fork_source_note, with aparent_goneoutcome when the original session can no longer be found.
This session began as a fork (copy) of another session that is still running:
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
tengu_harbor_kite Off by default, switched on for this accountThe 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.
Read once, for one account on one subscription tier, against v2.1.224. It isn't a statement about your account. What a flag value here can and cannot tell you
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.
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.
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.
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.
New in this build: CLAUDE_CODE_HARBOR_KITE