Unclear The evidence shows the instruction text changing, but not the viewer's own loading rules.
What
Artifacts are self-contained pages Claude can build and show in a viewer. The viewer only loads scripts from approved websites. Both sets of instructions Claude follows when writing artifacts now include https://unpkg.com among five allowed script sources. They previously said unpkg was blocked. esm.sh is still blocked.
Why
Claude may now load code libraries from unpkg.com in artifacts it writes, instead of avoiding that site.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The evidence shows the instruction text changing, but not the viewer's own loading rules.