Append content without resending a shared file

Artifact Share CLI 0.8.2’s artifactshare append <target> <path> and remote MCP’s append_artifact append content to a single shared file and create a new version at the same share link. For Markdown, they append to the end of the current source. For HTML, they append immediately before the closing body tag when present, or at the end otherwise. Neither adds a newline or separator.

If another update lands first, the operation preserves it and returns version_conflict with the current version ID. Run the operation again to append to the latest version. Static sites are not supported. To replace the full source, use CLI update or MCP update_artifact.