Create and distribute a plugin marketplace changedplugin-marketplaces
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Upstream edited this page at 24 Sep 2026 23:11 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 24 Sep 2026 23:37 UTC.
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### Reserved marketplace names
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158158| `owner` | object | Marketplace maintainer information. See [Owner fields](#owner-fields) | |
159159| `plugins` | array | List of available plugins | See [Plugin entries](#plugin-entries) |
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161<Note>
162 **Reserved names**: the following marketplace names are reserved for official Anthropic use and can't be used by third-party marketplaces: `claude-code-marketplace`, `claude-code-plugins`, `claude-plugins-official`, `claude-plugins-community`, `claude-community`, `anthropic-marketplace`, `anthropic-plugins`, `agent-skills`, `anthropic-agent-skills`, `knowledge-work-plugins`, `life-sciences`, `claude-for-legal`, `claude-for-financial-services`, `financial-services-plugins`, `first-party-plugins`, `claude-tag-plugins`, `healthcare`. Names that impersonate official marketplaces, such as `official-claude-plugins` or `anthropic-plugins-v2`, are also blocked. Reserving these names prevents a third-party marketplace from presenting itself as an Anthropic-published source.
161### Reserved marketplace names
163162
164 Claude Code re-checks reserved names every time it loads a marketplace, not only when you add one. A marketplace that was registered under one of these names before the name became reserved stops loading and reports that it is [registered from an untrusted source](/docs/en/errors#marketplace-is-registered-from-an-untrusted-source). Remove that marketplace and re-add it from the official Anthropic source. A third-party marketplace affected by a newly reserved name loads again as soon as you re-add it under a different name. Before v2.1.205, `first-party-plugins` and `healthcare` weren't reserved, and a marketplace already registered under a reserved name kept loading. Before v2.1.265, `claude-tag-plugins` wasn't reserved.
163Claude Code refuses to add a third-party marketplace under any of the following names:
165164
166 You also can't name a marketplace `npm`, `pip`, `uv`, `cargo`, `github`, or `gh`, in any casing. This check requires Claude Code v2.1.275 or later.
167</Note>
165* Reserved for official Anthropic marketplaces: `claude-code-marketplace`, `claude-code-plugins`, `claude-plugins-official`, `claude-plugins-community`, `claude-community`, `anthropic-marketplace`, `anthropic-plugins`, `agent-skills`, `anthropic-agent-skills`, `knowledge-work-plugins`, `life-sciences`, `claude-for-legal`, `claude-for-financial-services`, `financial-services-plugins`, `first-party-plugins`, `claude-tag-plugins`, `healthcare`.
166* A name that impersonates an official marketplace, such as `official-claude-plugins` or `anthropic-plugins-v2`.
167* <span id="reserved-name-spellings" />Another spelling of a reserved name: one that differs only by a trailing dot or by a symbol other than an underscore in place of a hyphen, so `claude.code.plugins` counts as `claude-code-plugins`. This check requires Claude Code v2.1.280 or later.
168* `npm`, `pip`, `uv`, `cargo`, `github`, or `gh`, in any casing. This check requires Claude Code v2.1.275 or later.
169
170A third-party marketplace already registered under a reserved name or another spelling of one also stops loading. With a reserved name, you see the [registered from an untrusted source](/docs/en/errors#marketplace-is-registered-from-an-untrusted-source) error. With another spelling of one, `/plugin`, `claude plugin install`, and `claude plugin update` warn that [its entry is ignored](/docs/en/errors#marketplace-name-is-another-spelling-of-a-reserved-name). To fix either, remove the marketplace, then re-add it under a different name or from the official Anthropic source.
171
172Before v2.1.205, `first-party-plugins` and `healthcare` weren't reserved, and a marketplace already registered under a reserved name kept loading. Before v2.1.265, `claude-tag-plugins` wasn't reserved.
168173
169174### Owner fields
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