import type { McpToolName } from "../contracts/output-schemas.js";
export declare const BURDEN_KINDS: readonly ["read", "search", "shell", "state", "diagnostic"];
export type BurdenKind = typeof BURDEN_KINDS[number];
export interface BurdenBucket {
    readonly calls: number;
    readonly bytesReturned: number;
}
export type BurdenByKind = Record<BurdenKind, BurdenBucket>;
export declare function emptyBurdenByKind(): BurdenByKind;
export declare function cloneBurdenByKind(source: Readonly<BurdenByKind>): BurdenByKind;
export declare function freezeBurdenByKind(source: BurdenByKind): Readonly<BurdenByKind>;
export declare function burdenKindForTool(tool: McpToolName): BurdenKind;
export declare function isNonReadBurdenKind(kind: BurdenKind): boolean;
export declare function projectBurdenByKind(source: Readonly<BurdenByKind>, tool: McpToolName, returnedBytes: number): Readonly<BurdenByKind>;
export declare function totalNonReadBytesReturned(source: Readonly<BurdenByKind>): number;
export declare function topBurdenKind(source: Readonly<BurdenByKind>): {
    kind: BurdenKind;
    calls: number;
    bytesReturned: number;
} | null;
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