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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 v2.1.248 ·

Outbound session events go out as signed envelopes

Events sent to the remote session endpoint are now signed envelopes.

Under the hood Internal Changes
JSON All of v2.1.248
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
Internal ChangesKind: in v2.1.248,
Internal ChangesSection of the release
What

Events posted to the remote session endpoint are no longer assembled inline; they are passed through a signer and the returned envelope is posted. The remote session manager threads the same signing options into its client config and into the withheld-initial-prompt send. Nothing in this code gates it on the remote path.

Evidence

/v1/code/sessions/

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

See this entry in the whole of v2.1.248 →

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