Nothing to try yet Notable
Artifacts with an assets capability now support uploading, listing, reading, and deleting stored files
What
The Artifact tool now documents four new actions for artifacts whose page declares an assets capability:
upload_asset— push a local file into the artifact's asset storelist_assets— enumerate what's storedread_asset— pull a stored file back down to diskdelete_asset— remove a stored file
Why
This gives an artifact its own persistent file storage that Claude can manage directly, useful for artifacts that need to keep data, uploads, or generated files around between sessions rather than only living in the page itself.
Names in the bundleassets
Documented inapi/build-with-claude/citations