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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 v2.1.251 ·

Teammate idle notifications confirm they were delivered

Teammate idle and failure notices are confirmed delivered, with a distinct log when they aren't.

Under the hood Internal Changes
JSON All of v2.1.251
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
TeammatesArea: what it touches
Internal ChangesKind: in v2.1.251,
Internal ChangesSection of the release
What

When a teammate agent tells its team leader it has gone idle or failed, the code now checks that the mailbox write actually returned an id and logs a distinct line when delivery could not be confirmed, instead of assuming it landed. Telemetry is now captured for the notification result as well.

Evidence

not delivered (mailbox write returned no id)

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

See this entry in the whole of v2.1.251 →

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