Source Intelligence

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 v2.1.229 Home All releases olderv2.1.228 v2.1.231newer
Claude Code v2.1.229

Windows now has its own gate for Harbor cross-session messaging

Use it now
Useful3 Signal4
Cross-Session Messaging Notable not in their notes

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

Feature flag
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 v2.1.229: 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 v2.1.229. It isn't a statement about your account. What a flag value here can and cannot tell you

CLAUDE_CODE_HARBOR_KITE
What

The check for Harbor cross-session messaging was rewritten. Setting CLAUDE_CODE_HARBOR_KITE now forces it on regardless of platform. Windows, which previously always returned false, is allowed through when the separate tengu_harbor_kite_win gate is on. The general gate is consulted last. Both gates fall back to off in this build, so unless the environment variable is set, whether it runs is decided by remote config.

Evidence

tengu_harbor_kite_win

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 v2.1.229 →