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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 v2.1.227 ·

Failed heartbeat drops back off the idle interval

After a failed heartbeat, Claude Code goes back to checking in more often.

Under the hood Bug Fixes
JSON All of v2.1.227
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
InternalsArea: what it touches
Bug FixesKind: in v2.1.227,
Bug FixesSection of the release
What

When the CLI heartbeat has been told by the server it can beat less often and a beat then fails with anything other than a 429, the longer idle interval is given up and the shorter starting interval takes effect immediately.

Details
  • Reported as a warning event named cli_heartbeat_idle_reverted_on_failure.
  • A failed liveness-probe beat is now counted separately from a normal failed beat.
Evidence

cli_heartbeat_idle_reverted_on_failure

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

See this entry in the whole of v2.1.227 →

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