@modelcontextprotocol/ext-apps - v0.4.0
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    Interface McpUiHostCapabilities

    Capabilities supported by the host application.

    McpUiInitializeResult for the initialization result that includes these capabilities

    interface McpUiHostCapabilities {
        experimental?: {};
        logging?: {};
        message?: McpUiSupportedContentBlockModalities;
        openLinks?: {};
        sandbox?: {
            csp?: McpUiResourceCsp;
            permissions?: McpUiResourcePermissions;
        };
        serverResources?: { listChanged?: boolean };
        serverTools?: { listChanged?: boolean };
        updateModelContext?: McpUiSupportedContentBlockModalities;
    }
    Index

    Properties

    experimental?: {}

    Experimental features (structure TBD).

    logging?: {}

    Host accepts log messages.

    Host supports receiving content messages (ui/message) from the Guest UI.

    openLinks?: {}

    Host supports opening external URLs.

    sandbox?: { csp?: McpUiResourceCsp; permissions?: McpUiResourcePermissions }

    Type Declaration

    Sandbox configuration applied by the host.

    serverResources?: { listChanged?: boolean }

    Type Declaration

    • OptionallistChanged?: boolean

      Host supports resources/list_changed notifications.

    Host can proxy resource reads to the MCP server.

    serverTools?: { listChanged?: boolean }

    Type Declaration

    • OptionallistChanged?: boolean

      Host supports tools/list_changed notifications.

    Host can proxy tool calls to the MCP server.

    Host accepts context updates (ui/update-model-context) to be included in the model's context for future turns.