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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 v2.1.219 ·

Workshop HTML artifact publishing gains a publish-time verifier

Published HTML artifacts can be checked against rules first and refused outright instead of shipping something unsafe.

Nothing to try yet In Development
JSON All of v2.1.219
Nothing to try yetTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
In DevelopmentKind: in v2.1.219,
In DevelopmentSection of the release

The publish-time HTML verifier is present but its gate falls back to false and also requires the surrounding workshop feature check.

What

Artifact publishing can now run the generated HTML through a verifier that refuses to publish when rules are violated, rather than shipping it and relying on later checks.

Details
  • publishing accepts a new verifyWorkshopHtml option; publishing a plan as an artifact passes verifyWorkshopHtml: "probe" when the gate is on
  • refusal reports per-rule violations and emits telemetry under workshop_html_publish and verifier_refused instead of publishing
  • verified slugs accumulate into app state under workshopVerifiedSlugs
  • for workshop surfaces, a redeploy must pass refusedSidecarHistory, sourced from a new AppState key sidecarHistorySlugs, otherwise publishing is refused rather than skipping the sidecar-ordering gate
  • sidecar files whose content type is not in the inert text or binary allowlists are flagged as renderable or executable
  • the gate falls back to false and additionally requires the surrounding workshop feature check; none of these names exist in 2.1.218
Evidence

refusing rather than skipping the sidecar-ordering gate, verifyWorkshopHtml

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

See this entry in the whole of v2.1.219 →

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