/**
 * In-memory stateful Exa research planner.
 *
 * These helpers intentionally never call Exa network APIs. They only track and
 * summarize planning state so the model can decide which explicit retrieval
 * tool to call next.
 *
 * Each `createResearchPlanner()` call returns an isolated instance. Hosts
 * needing per-process or per-session isolation construct their own planner
 * via `createResearchPlanner()`.
 */
import type { ResearchStatus, ResearchStepInput, ResearchStepResult, ResearchSummaryParams } from "./research-planner-types.js";
export interface ResearchPlanner {
    recordStep(input: ResearchStepInput): ResearchStepResult;
    getStatus(): ResearchStatus;
    getSummary(params?: ResearchSummaryParams): string;
    reset(): ResearchStatus;
}
export declare function createResearchPlanner(): ResearchPlanner;