/**
 * get_usage_report tool — Aggregate token usage and cost across agents,
 * tasks, and projects.
 *
 * Scans all usage records in the Usage/ folder, filters by the provided
 * criteria, and returns totals grouped by agent and model.
 */
import { z } from "zod";
import { Vault } from "../vault.js";
import { Config } from "../config.js";
export declare const getUsageReportSchema: {
    project_id: z.ZodOptional<z.ZodString>;
    agent_id: z.ZodOptional<z.ZodString>;
    task_id: z.ZodOptional<z.ZodString>;
    from_date: z.ZodOptional<z.ZodString>;
    to_date: z.ZodOptional<z.ZodString>;
};
export declare const getUsageReportHandler: (vault: Vault, config: Config) => (input: {
    project_id?: string;
    agent_id?: string;
    task_id?: string;
    from_date?: string;
    to_date?: string;
}) => Promise<{
    content: {
        type: "text";
        text: string;
    }[];
    isError?: boolean;
}>;
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