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Sweep 28 Aug 2026 · 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

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.

Reference / Feature flags

tengu_harbor_kite_win

A Claude Code feature flag, read out of the shipped bundle. It has been in the build since v2.1.229, including the newest one read.

What it is

Setting CLAUDE_CODE_HARBOR_KITE forces cross-session messaging on, and Windows can now be allowed through.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.229.

Presence across releases

ReleasesReadingDeclared typeDefault
2.1.245 – 2.1.250 5 releases never mined — —
2.1.229 – 2.1.243 14 releases in the build — bool:false

A row reading never mined is a release with no archived bundle behind it. Nothing was read out of it, so nothing here says whether the name was in it. A declared type or a default is only ever what that release's own bundle stated.

Gate readings

ReleaseResolvedThis accountAnonymousCompiled default
v2.1.248 Off by default, switched on for this account on on off
v2.1.238 Off in both readings off off on
v2.1.236 Off in both readings off off on
v2.1.232 read on another version On for this account, and not off by default on on on
v2.1.229 read on another version On for this account, and not off by default on on on

Two arms, because they disagree: this account is the one account this site reads and anonymous is a baseline with no identity attached. A reading says nothing about your account, and off cannot rule out a rollout both readings sit outside of. What these readings can and cannot show.

Changelog entries naming it

  1. v2.1.248Kite network transport now defaults on, including on Windows

    The kite network transport is on by default everywhere, and CLAUDE_CODE_HARBOR_KITE=0 now really turns it off.

    gate cited by this entry

  2. v2.1.248Cross-session peer messaging is on by default

    Sessions can message each other by default now, including on Windows; the cloud variant stays off.

    gate cited by this entry

  3. v2.1.238Cross-session peer identity is now keyed to the account, still off by default

    Session-to-session messaging identity now follows your account, but the whole feature is off by default.

    gate cited by this entry

  4. v2.1.236Asking another local session to ping you when it goes idle, built end to end but not offered to the model

    Your session already honours idle-ping requests from other sessions; only asking for one is gated off.

    gate cited by this entry

  5. v2.1.236The message tool's notify_when_idle parameter and its supporting layer

    Claude can ask another session to ping it when idle, but the parameter is hidden unless the gate is on.

    gate cited by this entry

  6. v2.1.232@-mention completion for other Claude sessions

    You could @-mention your other Claude sessions from the prompt box, but the flag is off by default.

    gate cited by this entry

  7. v2.1.232@-mentioning another Claude session

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

    gate cited by this entry

  8. v2.1.232A /config row for messages from your other sessions

    A settings row for handling messages from your other sessions exists but is hidden here.

    gate cited by this entry

  9. v2.1.232@-mentions can resolve other sessions, behind a flag

    @-mentions can point at another session instead of a file, but that stage is off here.

    gate cited by this entry

  10. v2.1.229Windows now has its own gate for Harbor cross-session messaging

    Setting CLAUDE_CODE_HARBOR_KITE forces cross-session messaging on, and Windows can now be allowed through.

    gate cited by this entry

Documentation pages

None of Anthropic's documentation pages this site has a copy of carries this name.

Names beside it

Every feature flag in the inventory starting tengu_harbor_kite, up to twelve of them.

tengu_harbor_kiteMessages from another session render as an @sender header with indented body instead of raw tags. 2.1.224 tengu_harbor_kite_cloudCLAUDE_CODE_HARBOR_KITE_CLOUD turns on cloud peer access; otherwise a server flag decides and it's off. 2.1.232 tengu_harbor_kite_limitsIncoming peer messages now pass rate, duplicate and loop checks before queuing, with drops shown to you. 2.1.242 tengu_harbor_kite_mode_emitMessages from a session with a mismatched permission mode are held and shown with an approve/deny dialog. 2.1.224 tengu_harbor_kite_pacing_offYou can switch off Harbor request pacing with a new environment variable. 2.1.236

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the feature flag does. All feature flags.