What probably matters to youSection of the release
What
claude plugin marketplace add adds a plugin marketplace, a catalogue of plugins you can install from. It now accepts --from-link, an option that does not appear in --help. It is meant for a program handling an install link. It adds the marketplace the way the install link would, then prints a single line of JSON: the marketplace name with added true or false, or, if the add is refused, a refused object naming the kind of refusal before the command fails.
With --from-link set:
the check for reserved marketplace names is skipped
a source that is already registered is reported as added: false and not added again
a marketplace whose name clashes with an existing one is refused
Separately, adding a marketplace now prints extra lines when an existing source was replaced.
Why
This looks like the command-line half of a one-click marketplace install link that another program will drive. You can type the option yourself, but nothing inside Claude Code uses it.
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhich outside program is meant to call `--from-link` is not known.
Anthropic's release notes agreeImproved claude plugin marketplace add to say when it replaces a marketplace already added under the same name from a different source, and…