Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.271 ·

Comment anchor tracking gains anchor_moved_at and hides unreadable anchor paths

Artifact comments hide the anchor path when unreadable and add a timestamp for when it moved

TierUnder the hoodhow much it should matter to you
Useful1my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaArtifactswhat it touches
KindInternal Changesin v2.1.271,
Under the hood

Artifact comments hide the anchor path when unreadable and add a timestamp for when it moved

What

When sending data about a comment thread on an artifact, Claude Code now:

  • omits the anchor_path field entirely if the path is flagged as unreadable
  • adds a new anchor_moved_at field recording when the comment's anchor point last moved
Why

Hiding an unreadable path avoids sending misleading or broken location data, and tracking when an anchor moved gives a clearer picture of how a comment's position has changed over time.

See this entry in the whole of v2.1.271 →