/**
 * Exa deep research search — powered by deep search with synthesized output.
 */
import type { ToolPerformResult } from "./formatters.js";
export declare const DEFAULT_DEEP_NUM_RESULTS = 10;
export declare const DEEP_RESEARCH_TYPES: readonly ["deep-reasoning", "deep-lite", "deep"];
interface ResearchParams {
    query: string;
    type?: (typeof DEEP_RESEARCH_TYPES)[number];
    systemPrompt?: string;
    textMaxCharacters?: number;
    outputSchema?: Record<string, unknown>;
    additionalQueries?: string[];
    numResults?: number;
    includeDomains?: string[];
    excludeDomains?: string[];
    startPublishedDate?: string;
    endPublishedDate?: string;
}
export declare function performResearch(apiKey: string, params: ResearchParams): Promise<ToolPerformResult>;
export {};