Follow Discord
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 v2.1.234 ·

Hosts must stay silent on dialog kinds they never declared

SDK hosts must stay silent on dialog kinds they never declared instead of replying cancelled.

Under the hood Improvements
JSON All of v2.1.234
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SDKArea: what it touches
ImprovementsKind: in v2.1.234,
ImprovementsSection of the release
What

The dialog protocol docs for SDK hosts were corrected. A host that receives a dialog_kind it did not declare must now leave the request unanswered rather than replying {behavior: "cancelled"}, because cancelled is a real settlement meaning the user dismissed the dialog.

Details
  • A kind is only sent to sessions where a client declared it in initialize.supportedDialogKinds.
  • On multi-client transports the request still reaches every attached client, so an undeclared kind can legitimately arrive at a host that cannot show it.
  • Dialogs left unanswered are cancelled by the CLI itself once the deadline passes.
Evidence

which is a real settlement treated as the user dismissing the dialog

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

See this entry in the whole of v2.1.234 →

Feedback