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

Claude Code v2.1.225 ·

Workshop authoring-progress hooks fire during streaming

Streaming now feeds tool and partial-input events to the workshop progress display.

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2Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
In DevelopmentKind: in v2.1.225,
In DevelopmentSection of the release

Streaming callbacks into the workshop authoring-progress module exist but only run when an internal workshop-mode predicate passes.

What

Streaming now emits tool-use and partial-JSON callbacks into a workshop authoring-progress module, which is off unless internal workshop mode applies.

Details
  • onToolUseStart is called on a content_block_start for a tool use.
  • onInputJsonDelta is called on each partial JSON delta.
  • The module is only consulted when enabled, which requires an internal workshop-mode predicate.
  • Setting CLAUDE_WORKSHOP_PROGRESS to false switches it off.
Evidence

CLAUDE_WORKSHOP_PROGRESS

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

Read from
Names in the bundleCLAUDE_WORKSHOP_PROGRESS

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