value?: string;

/** External URL opened by the button. */

url?: string;

/** Channel-native web app URL for renderers that support embedded web apps. */

webApp?: { url: string };

/** Higher values are kept first when channel action limits require dropping controls. */

priority?: number;

/** Disabled action hint; channels without disabled-state support render fallback text. */

disabled?: boolean;

/** Optional visual style hint for renderers that support styled actions. */

style?: AgentRuntimeInteractiveButtonStyle;

};