/**
 * Configuration and Meta Tools - V2.0 Phase 6
 *
 * Configuration management and system metadata tools.
 * Provides introspection and control over KERNL's operation.
 *
 * Phase 6 Tools:
 * - sys_get_config: Get current KERNL configuration
 * - sys_set_config_value: Update configuration value
 * - sys_get_usage_stats: Get tool usage statistics
 * - sys_get_tool_info: Get information about available tools
 */
import { type Tool } from '@modelcontextprotocol/sdk/types.js';
import { ProjectDatabase } from '../storage/database.js';
export declare const configMetaTools: Tool[];
/**
 * Get Config Handler
 */
declare function getConfigHandler(): Promise<{
    success: boolean;
    config: {
        database: {
            path: string;
            version: string;
        };
        paths: {
            dataDir: string;
            projectsDir: string;
            tempDir: string;
        };
        version: string;
        features: {
            crashRecovery: boolean;
            semanticSearch: boolean;
            crossProjectLearning: boolean;
            gitIntegration: boolean;
            chromeExport: boolean;
            systemControl: boolean;
        };
        limits: {
            maxCheckpointSize: number;
            maxSessionDuration: number;
            maxSearchResults: number;
            maxFileSize: number;
        };
    };
    error?: undefined;
} | {
    success: boolean;
    error: {
        code: string;
        message: string;
    };
    config?: undefined;
}>;
/**
 * Set Config Value Handler
 */
declare function setConfigValueHandler(params: {
    key: string;
    value: any;
}): Promise<{
    success: boolean;
    key: string;
    oldValue: any;
    newValue: any;
    message: string;
    error?: undefined;
} | {
    success: boolean;
    error: {
        code: string;
        message: string;
    };
    key?: undefined;
    oldValue?: undefined;
    newValue?: undefined;
    message?: undefined;
}>;
/**
 * Get Usage Stats Handler
 */
declare function getUsageStatsHandler(params: {
    limit?: number;
}): Promise<{
    success: boolean;
    stats: {
        totalCalls: number;
        successRate: number;
        averageDuration: number;
        toolBreakdown: Record<string, any>;
        topTools: {
            name: string;
            calls: number;
        }[];
        recentActivity: {
            timestamp: string;
            tool: string;
            duration: number;
            success: boolean;
        }[];
    };
    error?: undefined;
} | {
    success: boolean;
    error: {
        code: string;
        message: string;
    };
    stats?: undefined;
}>;
/**
 * Get Tool Info Handler
 */
declare function getToolInfoHandler(params: {
    category?: string;
    detailed?: boolean;
}): Promise<any>;
/**
 * Track tool usage (called by server before/after tool execution)
 */
export declare function trackToolUsage(toolName: string, duration: number, success: boolean): void;
/**
 * Register tools for introspection
 */
export declare function registerTools(tools: Array<{
    name: string;
    category: string;
    description: string;
}>): void;
/**
 * Update config version (called by server on init)
 */
export declare function setConfigVersion(version: string): void;
export declare function createConfigMetaHandlers(db: ProjectDatabase): {
    sys_get_config: typeof getConfigHandler;
    sys_set_config_value: typeof setConfigValueHandler;
    sys_get_usage_stats: typeof getUsageStatsHandler;
    sys_get_tool_info: typeof getToolInfoHandler;
};
export {};
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