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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 v2.1.221 ·

Artifact live-update sockets send keepalive pings

Live artifact updates now ping every 25 seconds so long sessions stop getting dropped.

You'll notice Improvements
JSON All of v2.1.221
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
ImprovementsKind: in v2.1.221,
ImprovementsSection of the release
What

Long-lived artifact subscriptions should stop being dropped by idle timeouts.

Details
  • the live-subscribe websocket is opened with a keepalive config sending a "ping" frame every 25s (iV_ = 25000)
  • "ping" and "hb" are treated as open frames
  • the kill path now also aborts the subscription controller when the user stops the task
Evidence

openFrames: ["ping", "hb"]

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

See this entry in the whole of v2.1.221 →

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