You'll notice
Artifact styling instructions now check for fonts already on disk before telling Claude to fetch them
What
When Claude Code prepares styling instructions for building an artifact (a generated file such as a webpage), it now checks whether any of the system's files look like font files. If so, the instructions say fonts are already on disk and explicitly forbid fetching fonts from named web addresses. Otherwise, it keeps the previous instruction to obtain font files only through the Artifact tool.
Why
This avoids telling Claude to fetch fonts from the internet when suitable font files are already available locally, which should make artifact styling more reliable when fonts are already present.