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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.251 ·

Session registration secrets now checked for staleness

Session registration now rejects stale or mismatched short-lived tokens instead of reusing them blindly.

Under the hood New Features
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
Cloud SessionsArea: what it touches
New FeaturesKind: in v2.1.251,
New FeaturesSection of the release
What

The bridge that registers a session with the worker service now validates the short-lived token it uses, rejecting one issued for a different session, declining to register a token no fresher than the one already held, and continuing to reuse a held token past a caller-supplied age threshold when the host has nothing newer to offer.

Details
  • Applies to bridge sessions that register via this token; registration goes to the worker register endpoint.
  • Rejections are logged as "work secret rejected".
Evidence

work secret rejected

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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