/**
 * Widget protocol detection utilities
 *
 * Determines which rendering protocol to use based on tool metadata and result.
 * Priority: MCP Apps → ChatGPT Apps SDK → MCP-UI → None
 */
export type WidgetProtocol = "mcp-apps" | "chatgpt-app" | "mcp-ui" | "both" | null;
/**
 * Detect if a tool supports BOTH MCP Apps and ChatGPT Apps SDK
 *
 * @param toolMeta - Tool metadata from tool definition (_meta field)
 * @returns True if tool has both protocols
 */
export declare function hasBothProtocols(toolMeta?: Record<string, any>): boolean;
/**
 * Detect which widget protocol to use for rendering
 *
 * @param toolMeta - Tool metadata from tool definition (_meta field)
 * @param toolResult - Tool execution result
 * @returns The detected protocol or null if no custom UI
 */
export declare function detectWidgetProtocol(toolMeta?: Record<string, any>, toolResult?: any): WidgetProtocol;
/**
 * Extract resource URI for a specific protocol (used when toggling between protocols)
 *
 * @param protocol - The specific protocol to get URI for
 * @param toolMeta - Tool metadata from tool definition (_meta field)
 * @returns The resource URI or null
 */
export declare function getResourceUriForProtocol(protocol: "mcp-apps" | "chatgpt-app", toolMeta?: Record<string, any>): string | null;
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