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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.80 Home All releases olderv2.1.79 v2.1.81newer
Claude Code v2.1.80

Inline Marketplace Definitions in Settings

What

Define plugin marketplaces directly in settings.json using a new "settings" source type, without needing an external repository.

Details
  • Add marketplace definitions inline via the extraKnownMarketplaces config with source: "settings"
  • The reconciler writes a synthetic marketplace.json to the cache directory
  • Plugins must use remote sources (github, git-subdir, npm, url, pip) — relative paths are not supported
  • Reserved official marketplace names (anthropic, claude, etc.) cannot be used with settings sources
  • Marketplace name must match the extraKnownMarketplaces key
Evidence

Settings source marketplace schema (search for "source: \"settings\"" and "Inline marketplace manifest defined directly in settings.json")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.80 →