import type { TokenUsage } from "../models/types.js";
import type { BudgetConfig, AuditEntry } from "./types.js";
export declare class BudgetExceededError extends Error {
    readonly kind: "agent" | "run" | "cost";
    readonly current: number;
    readonly limit: number;
    constructor(kind: "agent" | "run" | "cost", current: number, limit: number);
}
/** Per-million-token pricing: [input, output] */
export interface ModelPricing {
    input: number;
    output: number;
}
/** Default pricing per million tokens for common models */
export declare const DEFAULT_PRICING: Record<string, ModelPricing>;
export declare class BudgetTracker {
    private agentTokens;
    private totalInput;
    private totalOutput;
    private totalCost;
    private pricing;
    private config;
    constructor(config: BudgetConfig, customPricing?: Record<string, ModelPricing>);
    record(agentName: string, modelId: string, usage: TokenUsage): AuditEntry[];
    getAgentTokens(name: string): number;
    getTotalTokens(): number;
    getTotalCost(): number;
    isOverBudget(): boolean;
}
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