export declare const AGENT_NATIVE_MCP_APP_HOST_MESSAGE_TYPES: {
    readonly HOST_CONTEXT: "agentNative.mcpHostContext";
    readonly UPDATE_MODEL_CONTEXT: "agentNative.mcpHost.updateModelContext";
    readonly OPEN_LINK: "agentNative.mcpHost.openLink";
    readonly REQUEST_DISPLAY_MODE: "agentNative.mcpHost.requestDisplayMode";
    readonly RESPONSE: "agentNative.mcpHost.response";
};
export type AgentNativeMcpAppHostMessageType = (typeof AGENT_NATIVE_MCP_APP_HOST_MESSAGE_TYPES)[keyof typeof AGENT_NATIVE_MCP_APP_HOST_MESSAGE_TYPES];
export type McpAppDisplayMode = "inline" | "pip" | "fullscreen" | (string & {});
export interface McpAppModelContextContentPart {
    type: string;
    [key: string]: unknown;
}
export interface McpAppModelContextUpdate {
    content?: McpAppModelContextContentPart[];
    structuredContent?: unknown;
}
export type McpAppHostRequestMode = "act" | "plan";
export interface McpAppHostChatMessage {
    message: string;
    context?: string;
    content?: McpAppModelContextContentPart[];
    structuredContent?: unknown;
    mode?: McpAppHostRequestMode;
    requestMode?: McpAppHostRequestMode;
}
export interface McpAppHostCapabilities {
    updateModelContext?: boolean;
    openLink?: boolean;
    displayModes?: McpAppDisplayMode[];
    [key: string]: unknown;
}
export interface McpAppHostContext {
    capabilities?: McpAppHostCapabilities;
    [key: string]: unknown;
}
export interface McpAppHostInfo {
    name?: string;
    version?: string;
    [key: string]: unknown;
}
export interface McpAppHostContextSnapshot {
    context: McpAppHostContext | null;
    capabilities: McpAppHostCapabilities | null;
    version: unknown;
    hostInfo?: McpAppHostInfo;
}
/**
 * True when this document is an app running inside an MCP App widget (a
 * ChatGPT, Codex, or Claude card or panel). The host, not the app, owns
 * navigation and chat there, so apps drop their own navigation chrome.
 *
 * Being a widget is a property of the document, not of its current URL: the
 * first positive answer is kept (and marked on `<html>`, where the first-paint
 * script in `getMcpAppWidgetEmbedBootScriptBody` also marks it), so a client
 * navigation that drops the embed query params, or a token swap that
 * de-enrolls the chat bridge, never brings the app's own chrome back.
 */
export declare function isMcpAppWidgetEmbed(): boolean;
export declare function useIsMcpAppWidgetEmbed(): boolean;
/**
 * True for a directory widget, whose scoped session can only read its own
 * resource. Apps skip application-state writes and save-failure surfaces there
 * instead of showing errors for requests that can never land.
 */
export declare function useIsMcpDirectoryWidgetReadOnlyEmbed(): boolean;
export declare function useIsMcpDirectoryWidgetWriteEmbed(): boolean;
export declare function isOpenAiMcpAppHost(): boolean;
export declare function initializeMcpAppHost(): Promise<boolean>;
export declare function sendMcpAppHostMessage(chat: McpAppHostChatMessage): Promise<boolean | null> | false;
export declare function getMcpAppHostContext(): McpAppHostContextSnapshot;
export declare function useMcpAppHostContext(): McpAppHostContextSnapshot;
export declare function updateMcpAppModelContext(update: McpAppModelContextUpdate): Promise<boolean> | false;
export declare function openMcpAppHostLink(url: string): Promise<boolean> | false;
export declare function requestMcpAppDisplayMode(mode: McpAppDisplayMode): Promise<boolean> | false;
export declare function _resetMcpAppHostForTests(): void;