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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.228 ·

Local IPC sends refuse a pipe with no live owner

Messages to another Claude session now fail loudly if no live session owns that pipe.

Under the hood In Development
JSON All of v2.1.228
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Cross-Session MessagingArea: what it touches
In DevelopmentKind: in v2.1.228,
In DevelopmentSection of the release
What

Connecting to a local message pipe is now asynchronous and first resolves who owns it. If no running session has registered an inbox there and the pipe cannot be attributed to a live process, the send throws instead of writing to an unvouched socket, with a dedicated error class.

Details
  • The requirement for a live owner is computed per call, and the build does not show what it falls back to when that computation says the check is not required.
Evidence

No running session has registered an inbox at

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

See this entry in the whole of v2.1.228 →

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