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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 v2.1.198 ·

control_cancel_request Message Type

Entry
JSON All of v2.1.198
EntryKind: in v2.1.198,
ImprovementsSection of the release

A new control_cancel_request message type in the session transcript allows in-flight control requests (such as side questions) to be cancelled mid-flight.

Details
  • Type carries a request_id string matching the outstanding control_request
  • Workers that receive this message should abort the in-flight request
Evidence

Transcript parser addition (search for "control_cancel_request")

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

See this entry in the whole of v2.1.198 →

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