What
Managed settings can now spell the plugin marketplace allowlist as allowedMarketplaces, read exactly as strictKnownMarketplaces. If a file sets both, the alias is ignored and a warning is printed. Older Claude Code versions do not know the alias, so keep the canonical key when older clients read the same managed settings file.
Details
- The mapping is registered as a pair,
{ alias: "allowedMarketplaces", canonical: "strictKnownMarketplaces" }. - Managed settings only; the alias is not read from user or project settings.
Evidence
Alias for strictKnownMarketplaces (managed settings only): this key is read exactly as if it
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Names in the bundleallowedMarketplacesstrictKnownMarketplaces
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.
Confirmed since
Anthropic's documentation has since written up strictKnownMarketplaces, on All settings.
| 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
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up strictKnownMarketplaces, on All settings.
Anthropic's release notes agree
Settings: additionalMarketplaces and allowedMarketplaces are now accepted as friendlier aliases for extraKnownMarketplaces and…
The name it cites is new in this build
New in this build: allowedMarketplaces