Settings files can now write additionalMarketplaces for extraKnownMarketplaces and allowedMarketplaces for strictKnownMarketplaces. The alias is folded into the canonical key when settings are read, and if both spellings appear in one file the alias is ignored with a warning.
- Applied on the normal settings read path, the raw-settings fallback path, and the settings write path, so Claude Code may rewrite an alias to the canonical spelling when it saves.
- The warning names both keys: keep only the canonical one.
- The aliases were also added to the list of keys the SDK strips when sanitizing settings, alongside
enabledPluginsandextraKnownMarketplaces.
are the same setting; keep only, "${e.alias}" and "${e.canonical}" are the same setting; keep only "${e.canonical}"
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
| Restriction allowlists | Takes the list whole from the highest source that sets it, without adding entries from lower sources. When the highest source doesn't set one, takes it whole from the next source down | [`availableModels`](#avail…settings-reference see the edit
Anthropic's documentation has since written up strictKnownMarketplaces, on All settings.
Settings: additionalMarketplaces and allowedMarketplaces are now accepted as friendlier aliases for extraKnownMarketplaces and…
New in this build: additionalMarketplaces