import { ZodSchema } from 'zod';
export interface SkillTool {
    name: string;
    description: string;
    schema: ZodSchema;
    execute(input: unknown): Promise<unknown>;
}
export interface ToolDefinition {
    name: string;
    description: string;
    schema: Record<string, unknown>;
}
export interface ToolCallRequest {
    name: string;
    input: Record<string, unknown>;
}
export interface ToolCallResult {
    toolName: string;
    input: Record<string, unknown>;
    output: unknown;
    duration: number;
    success: boolean;
    error?: string;
}
export declare class ToolRegistry {
    private tools;
    private logger;
    private webToolsRegistered;
    constructor();
    /**
     * Register all 5 native web intelligence tools as first-class built-ins.
     * No API keys required — all engines work out of the box.
     *
     * Tools registered:
     *   web_search    — DuckDuckGo + Google + SearXNG search
     *   web_extract   — Content-density extraction from any URL
     *   web_crawl     — BFS crawler with depth control
     *   web_research  — Multi-round search+extract+synthesis
     *   web_map       — Sitemap.xml + link discovery
     */
    private registerNativeWebTools;
    /** Check if native web intelligence tools are active */
    isWebIntelligenceActive(): boolean;
    /** Register a SkillTool instance directly (used by plugins, custom tools, etc.) */
    register(tool: SkillTool): void;
    private registerBuiltins;
    registerTool(name: string, handler: (input: unknown) => Promise<unknown>, schema: ZodSchema): void;
    getTool(name: string): SkillTool | undefined;
    executeTool(request: ToolCallRequest): Promise<ToolCallResult>;
    listTools(): ToolDefinition[];
    getToolsForVercelAI(): Record<string, any>;
    private zodSchemaToJsonSchema;
    private mapZodToJsonType;
}
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