blockedMarketplaces
A Claude Code settings key, read out of the shipped bundle. It was in the build from v2.1.138 and was gone by v2.1.284.
Block plugin marketplace sources for your organization
Anthropic's own wording. Read off All settings, captured 2026-10-22.
In the changelogs
14Releases whose published page names blockedMarketplaces.
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v2.1.287
Plugin directory search grows into a full marketplace with admin controls
Claude Code can now load Anthropic's public plugin directory as a marketplace, open it with
/plugin search, and let admins allow or block itfound in this entry's text
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v2.1.283
Models denied in the catch-all managed policy now apply to every policy
deniedModelsin the catch-allmanaged.policiesentry is now combined with each specific policy's list instead of being replaced by itfound in this entry's text
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v2.1.282
Settings now warn when every blocked marketplace entry is invalid
If every entry in blockedMarketplaces is invalid, settings validation now reports that the blocklist enforces nothing
found in this entry's text, named in this entry
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v2.1.282
Marketplace restrictions now carry over to Claude Code processes started by another
blockedMarketplacesandstrictKnownMarketplacesfrom managed settings now pass to child Claude Code processesfound in this entry's text
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v2.1.282
An empty marketplace allowlist now counts as a plugin policy change
Claude Code now tells an unset strictKnownMarketplaces or blockedMarketplaces apart from an empty one when checking plugin policy
found in this entry's text, named in this entry
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v2.1.277
New enterprise validation for marketplace-restriction settings
Marketplace allow/block settings are now checked for enforceability, with unsafe entries handled differently by list
found in this entry's text, named in this entry
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v2.1.277
New client-side settings validation flags dead entries in policy-array settings
Claude Code now flags invalid entries in the strictKnownMarketplaces and blockedMarketplaces settings
found in this entry's text, named in this entry
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v2.1.277
New settings validation for strictKnownMarketplaces and blockedMarketplaces
Invalid strictKnownMarketplaces or blockedMarketplaces settings now fail safe instead of being silently misapplied
found in this entry's text, named in this entry
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v2.1.275
npm marketplace/plugin source schema gains registry URL validation and richer docs
npm-based plugin marketplaces now validate registry URLs and support scoped allow/block policies
found in this entry's text
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v2.1.242
Blocked skills-directory plugins say which policy to change
A blocked skills-directory plugin names the two managed policies your admin would need to change.
named in this entry, found in this entry's text
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v2.1.223
blockedMarketplaces policy accepts
<owner>/*wildcardsYou can block every marketplace repo under one owner with a single wildcard entry.
named in this entry, found in this entry's text
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v2.1.223
Marketplace policy entries support owner wildcards and GitHub SSH aliases
Marketplace block and allow lists now match repos written differently, and accept owner-wide wildcards.
named in this entry, found in this entry's text
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v2.1.223
Marketplace policy lists accept an owner wildcard
You can block or allow every repo under one owner with a single
owner/*marketplace entry.named in this entry, found in this entry's text
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v2.0.72
Marketplace Blocklist Support
found in this entry's text
First cited
4The earliest release whose published evidence quoted blockedMarketplaces was v2.0.72, 17 Dec 2025. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.
Presence across releases
2Build by build
149One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the settings key does. All settings keys.