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A plugin is a package that extends what Claude can do in Cowork. Installing one can add skills, MCP connectors, subagents, commands, or hooks in a single step. Plugins come from the marketplace, from your organization, or from a file you upload. A plugin you install is saved to your account, so its skills and connectors are also available in chat and in Claude Code. Plugins covers what each surface loads; this page covers the Cowork side. To get started, install a plugin from Customize, or add a Git repository as a marketplace to share plugins without publishing them.

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What a plugin can contain

A plugin can contain any combination of the following components. After installing, open the plugin to see what it provides. Skills and agents appear as tabs; connectors and hooks have their own pages.

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Install a plugin

You browse, install, and upload plugins from the Plugins page. Open Customize in the sidebar, then select Plugins.
1

Browse the marketplace

Select Discover to see available plugins. The default marketplace is Anthropic’s official catalog; you can add other marketplaces by URL.
2

Install

Select a plugin and click Install. Installing doesn’t add or sign you in to any connector. If the plugin includes connectors, open its Connectors tab afterward to add or connect each one.
3

Review components

Open the installed plugin to see its skills, connectors, agents, and hooks. Select Disable plugin to turn the whole plugin off, and connect or disconnect each connector on its own from the Connectors tab.
To install from a file instead, select the upload option on the Plugins page and select the plugin package.

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Use a Git repository as a marketplace

A Git repository that contains plugin packages can serve as a marketplace, which lets you share plugins without publishing to the public catalog. For a marketplace you add yourself, repositories on GitHub, including GitHub Enterprise, are supported, and public repositories on GitLab and Bitbucket also work. To distribute plugins to everyone in a Team or Enterprise organization, an Owner syncs the repository from organization settings instead, as Manage plugins for your organization describes.
1

Add the repository

On the Plugins page, select Add marketplace and enter the repository’s URL. Cowork accepts the standard https://github.com/owner/repo form and the owner/repo shorthand for GitHub.
2

Install plugins from it

Plugins defined in the repository appear alongside plugins from other marketplaces. Install them the same way.
Select Check for updates on a marketplace to pull the latest plugins from its repository, or turn on Sync automatically. For marketplaces your organization manages, see Manage plugins for your organization, or MCP, plugins, skills, and hooks if your organization deploys Claude Desktop with its own model provider.

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Limits

The following are the default limits for plugin packages and marketplaces. The in-app skill viewer previews individual files up to 1 MB. Larger files appear in the file list as “too large to preview” but are still available to Claude at runtime.

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Plugins managed by your organization

On Team and Enterprise plans, administrators can require certain plugins for everyone in the organization. Required plugins install automatically and show This plugin is required by your organization; you can’t remove them. For how administrators provision plugins, see Manage plugins for your organization.

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Update and remove plugins

Cowork checks for plugin updates from the marketplace they came from. If you’ve edited a plugin’s files locally, Cowork detects the change and warns you before an update would overwrite it. To remove a plugin you installed, open it under Customize > Plugins and select Remove. You can’t remove a plugin marked This plugin is required by your organization.

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Next steps