What probably matters to youSection of the release
What
upload_asset now accepts a file_paths array to upload several local files into one artifact in a single call, alongside the existing single-file file_path. A human-readable summary, like "3 files · "a.png", "b.png", 1 more", is shown for what was uploaded.
The artifacts tool also gained a copy_from/asset_ids action to copy assets from another artifact server-side.
Batch uploads via file_paths are disabled for non-interactive/scripted (SDK) callers, which must still upload one file per call.
If the asset store starts rate-limiting mid-batch, the remaining files in a file_paths call are held back with a specific retry message instead of the whole call failing.
A new error, asset_upload_pin_mismatch, is returned if an approval that covered a batch upload is retried as a single-file call, or vice versa.
Why
This makes it much faster to attach multiple images or files to one artifact, instead of needing a separate tool call and approval for each file.
