/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { BaseDeclarativeTool, type ToolInvocation, type ToolResult } from './tools.js';
import type { MessageBus } from '../confirmation-bus/message-bus.js';
import { Config } from '../config/config.js';
/**
 * Parses a prompt to extract valid URLs and identify malformed ones.
 * Strips common trailing punctuation from tokens before URL validation.
 */
export declare function parsePrompt(text: string): {
    validUrls: string[];
    errors: string[];
};
/**
 * Parameters for the WebFetch tool
 */
export interface GoogleWebFetchToolParams {
    /**
     * The prompt containing URL(s) (up to 20) and instructions for processing their content.
     */
    prompt: string;
}
/**
 * Implementation of the WebFetch tool logic
 */
export declare class GoogleWebFetchTool extends BaseDeclarativeTool<GoogleWebFetchToolParams, ToolResult> {
    private readonly config;
    static readonly Name: string;
    constructor(config: Config, messageBus?: MessageBus);
    protected validateToolParamValues(params: GoogleWebFetchToolParams): string | null;
    protected createInvocation(params: GoogleWebFetchToolParams, messageBus?: MessageBus, toolName?: string, displayName?: string): ToolInvocation<GoogleWebFetchToolParams, ToolResult>;
}