Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
Internal ChangesKind: in v2.1.265,
Internal ChangesSection of the release
What
New internal helpers build the guidance text that tells Claude how to write to an Artifact type's declared data store (via mcp, data, write_db, or run_script) instead of publishing files directly to it. Related helpers check whether a type's instructions file is verified as belonging to that type and release, and wrap or trim page content using <...page tag...> markers, dropping content that would exceed a set byte budget.
Why
This keeps Artifact type instructions accurate and within size limits, and steers writes toward the type's proper data store rather than direct file publishing.
