MCP plugins that declare dependencies in plugin.json are now automatically installed if they're from a compatible marketplace. Cross-marketplace dependencies are validated and blocked with an informative message.
Details
- Validates marketplace compatibility before auto-installing
- Shows truncated dependency lists: "dep1, dep2, dep3, dep4, dep5 (+ N dependencies)"
- Plugins from different marketplaces show: "not auto-installing — install it manually"
- Plugins not found in any marketplace are flagged: "not auto-installing"
- Deprecation notes (
depNote) are now surfaced in plugin installation feedback
Evidence
Plugin dependency system (search for "plugin.json declares dependency")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agree
Fixed plugin install not honoring dependencies declared in plugin.json when the marketplace entry omits them; /plugin install now lists…