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The desktop app and Claude.ai install the Moshi plugin, not a custom connector. The plugin carries Moshi’s guided workflows as well as its tools. Plugins need a paid Claude plan: Pro, Max, Team, or Enterprise. On a free plan, add the server as a custom connector instead.

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Install the plugin

1

Open the Plugins tab

Select Customize in the left sidebar, then the Plugins tab.In Cowork, open Customize from the Cowork tab first.
2

Add the marketplace

Under Personal plugins, select +, then Add marketplace. Choose Add from a repository and enter:
3

Install Moshi

Install moshi, then sign in to Moshi when it prompts you to connect. Select the organization that this client can use.
Moshi’s two guided workflows are MCP prompts, and prompts do not appear in the tools list. Find them by selecting + in the composer, then Connectors, then moshi. A prompt that is working correctly will never show up under tools.

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Add the server without the plugin

Use this on a free plan, or when you want the tools without the workflows.
1

Open Connectors

Select Customize, then Connectors, then +, then Add custom connector.
2

Enter the server URL

3

Connect

Select Connect and sign in to Moshi.

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Team and Enterprise

An Owner adds the connector once for the whole workspace. Open Organization settings, then Connectors, then Add. Hover Custom and select Web. Members then sign in as themselves. Each member opens Customize, then Connectors, and selects Connect. Each member’s organization selection is their own.

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Troubleshooting

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Disconnect

Remove the connector or the plugin in Customize. On Team and Enterprise, an Owner removes it for the workspace under Organization settings.