import type { TreeNode } from "./types.js";
export type TraceSummary = {
    traceId: string;
    startedAt: number | undefined;
    /** Working time: the waits for the person between turns are left out. */
    durationMs: number | undefined;
    rounds: number;
    tokens: number;
    costUsd: number;
    ask: string | undefined;
    annotation: string | undefined;
    hasError: boolean;
    agentName: string | undefined;
};
export declare function traceSummaries(roots: TreeNode[], annotations: Record<string, string>): TraceSummary[];