import type { Currency } from './money.js';
export type PricingModel = 'per_call' | 'balance' | 'subscription' | 'quota';
export type PricingScope = 'service' | 'tool';
export type QuotaPeriod = 'daily' | 'weekly' | 'monthly' | 'never';
export interface PerCallPricing {
    readonly model: 'per_call';
    readonly amount: number;
    readonly currency: Currency;
    readonly scope: PricingScope;
}
export interface BalancePricing {
    readonly model: 'balance';
    readonly amount: number;
    readonly currency: Currency;
    readonly scope: PricingScope;
}
export interface SubscriptionPricing {
    readonly model: 'subscription';
    readonly tier?: string;
    readonly validFor: string;
    readonly price?: number;
    readonly currency?: Currency;
    readonly scope: PricingScope;
}
export interface QuotaPricing {
    readonly model: 'quota';
    readonly tier?: string;
    readonly limit: number;
    readonly period: QuotaPeriod;
    readonly price?: number;
    readonly currency?: Currency;
    readonly scope: PricingScope;
}
export type SingleModelPricing = PerCallPricing | BalancePricing | SubscriptionPricing | QuotaPricing;
/**
 * Parsed `_stipend` pricing for a tool.
 *
 * Single-model and multi-model `accepts` wire shapes both parse into this
 * unified representation. `accepts` always has at least one entry.
 */
export interface StipendPricing {
    readonly service?: string;
    readonly accepts: readonly SingleModelPricing[];
}
export type AcceptsPricing = StipendPricing;
/**
 * Parse raw `_stipend` metadata from a tool's `_stipend` namespace.
 *
 * Returns `null` if the tool has no `_stipend` metadata — the tool is free.
 * Throws `ValidationError` on malformed input.
 */
export declare function parsePricing(raw: unknown): StipendPricing | null;
/**
 * What scope (service or tool) does this pricing entry produce when granted?
 */
export declare function pricingScopeFor(entry: SingleModelPricing): PricingScope;
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