/**
 * MCP Handlers — 系统类
 * health
 */
import type { KnowledgeBaseStats, McpContext } from './types.js';
export declare function health(ctx: McpContext): Promise<{
    success: boolean;
    errorCode: string | null;
    message: string;
    data: {
        actionHints?: string[] | undefined;
        issues?: string[] | undefined;
        session?: {
            id: string;
            intentPhase: "active" | "idle" | "ended";
            toolCallCount: number;
            toolsUsed: string[];
            durationMs: number;
        } | undefined;
        status: string;
        version: string | null;
        uptime: number;
        projectRoot: string;
        ai: {
            provider: string;
            hasKey: boolean;
        };
        checks: {
            database: boolean;
            gateway: boolean;
            vectorStore: boolean;
        };
        services: string[];
        knowledgeBase: KnowledgeBaseStats | null;
    } | null;
    meta: {
        source?: string | undefined;
        responseTimeMs?: number | undefined;
        version: string;
        tool?: string | undefined;
    };
}>;