/**
 * External MCP management — connect, load, reconnect external MCP servers.
 *
 * Extracted from beam.ts. All shared state is passed explicitly via
 * ExternalMCPState rather than module-level globals.
 */
import { Client } from '@modelcontextprotocol/sdk/client/index.js';
import type { ExternalMCPInfo } from '../types.js';
import type { PhotonConfig } from './types.js';
/** Mutable containers that external MCP functions read/write */
export interface ExternalMCPState {
    externalMCPs: ExternalMCPInfo[];
    externalMCPClients: Map<string, any>;
    externalMCPSDKClients: Map<string, Client>;
}
/**
 * Generate a unique ID for an external MCP based on its name.
 */
export declare function generateExternalMCPId(name: string): string;
/**
 * Load external MCPs from config.json mcpServers section.
 *
 * Populates state.externalMCPClients and state.externalMCPSDKClients as
 * side effects. Returns the ExternalMCPInfo[] array to be pushed into
 * state.externalMCPs by the caller.
 */
export declare function loadExternalMCPs(config: PhotonConfig, state: ExternalMCPState): Promise<ExternalMCPInfo[]>;
/**
 * Reconnect a failed external MCP.
 *
 * Uses re-find-after-await pattern for safe access to state.externalMCPs.
 */
export declare function reconnectExternalMCP(name: string, state: ExternalMCPState): Promise<{
    success: boolean;
    error?: string;
}>;
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