MCP, plugins, skills, and hooks changedthird-party/claude-desktop/extensions
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7878The [Claude connector directory](https://claude.com/connectors) is the canonical catalog of vetted servers. **Every connector in the directory that is not labeled "Made by Anthropic" is accessible in Claude Desktop on 3P** and can be deployed via `managedMcpServers` or installed by users. Connectors labeled "Made by Anthropic" are hosted on Anthropic infrastructure and are available only in standard Claude Desktop.
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8080<Note>
81 Some connectors return [MCP Apps](/docs/connectors/building/mcp-apps/getting-started), interactive widgets that Claude Desktop renders in place of a plain-text tool result. Each widget loads in a sandboxed iframe on `*.claudemcpcontent.com`, and setting [`disableNonessentialServices`](/docs/third-party/claude-desktop/configuration#disablenonessentialservices) to `true` blocks that origin, so Claude Desktop shows the connector's text result instead of the widget. The same key also blocks artifact previews, connector favicons, and the connector directory lookup. To keep MCP Apps rendering, leave `disableNonessentialServices` unset or `false`, and allow the widget hosts listed under [Required egress paths](/docs/third-party/claude-desktop/telemetry#required-egress-paths) at your perimeter firewall.
81 Some connectors return [MCP Apps](/docs/connectors/building/mcp-apps/getting-started), interactive widgets that Claude Desktop renders in place of a plain-text tool result. Each widget loads in a sandboxed iframe on `*.claudemcpcontent.com`, and setting [`disableNonessentialServices`](/docs/third-party/claude-desktop/configuration#disablenonessentialservices) to `true` blocks that origin, so Claude Desktop shows the connector's text result instead of the widget. The same key also blocks artifact previews and connector favicons. To keep MCP Apps rendering, leave `disableNonessentialServices` unset or `false`, and allow the widget hosts listed under [Required egress paths](/docs/third-party/claude-desktop/telemetry#required-egress-paths) at your perimeter firewall.
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8484### Productivity suites
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