import type { RiskBudget } from "./contracts.ts";
export declare const RISK_BUDGET_LIMIT_FIELDS: readonly ["maxTokens", "maxWallClockMs", "maxCostUsd", "maxAttempts", "maxToolCalls"];
export type RiskBudgetLimitField = (typeof RISK_BUDGET_LIMIT_FIELDS)[number];
export declare const RISK_BUDGET_FIELDS: readonly ["maxTokens", "maxWallClockMs", "maxCostUsd", "maxAttempts", "maxToolCalls", "requireApprovalAboveCostUsd"];
/** Parse raw durable budget input without cloning untrusted values. */
export declare function parseRiskBudget(value: unknown, label: string): RiskBudget;
export declare function validateRiskBudget(budget: RiskBudget, label: string): void;
export declare function exceededRiskBudgetFields(requested: RiskBudget, authority: RiskBudget): RiskBudgetLimitField[];
/** Intersects independent ceilings. Undefined fields do not constrain the result. */
export declare function intersectRiskBudgets(...budgets: readonly RiskBudget[]): RiskBudget;
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