Artifact tool gains a share action, behind CLAUDE_CODE_ARTIFACT_SHARE

What

Artifacts are pages Claude creates and publishes for you. The artifact tool has a new share action that changes who can see one.

• It takes url, mode, people and access. mode is org for the whole organisation or people for named members of it. access is view only or can comment.
• It reads the artifact's current permissions, plans the change, and applies it only if the artifact has not changed in the meantime.
• You confirm every share on a card. The action is refused in plan mode and in sessions with no way to show that card. It never shares publicly.
• In cloud sessions the request goes through a relay that carries your approval.
• A new Sharing section in Claude's instructions says when to offer a share. It appears only when shareOn is set.
• The tool's display shows a line such as share "title" with the organization (view only), or names the people.
• The action is available only when CLAUDE_CODE_ARTIFACT_SHARE is true and the session runs in the cloud or the desktop app.
• Separately, keeping track of comments you did not ask about now stops an unprompted redeploy.

Why

Claude can help you share an artifact without leaving the conversation, but nothing is shared until you approve it on the card. Where CLAUDE_CODE_ARTIFACT_SHARE is not true, the action does not appear.