import type { AnalyticsEntry } from './analytics-types.js';
/**
 * Version 2 is the first analytics contract that proves a savings claim from
 * two materialized MCP payloads. Earlier rows are retained for audit, but are
 * not evidence that context was avoided.
 */
export declare const SAVINGS_MEASUREMENT_SCHEMA_VERSION = 2;
export type SavingsClassification = 'verified-transport-reduction' | 'verified-transport-expansion-debit' | 'observed-return-only' | 'unverified-reported';
export declare function classifySavings(entry: AnalyticsEntry): SavingsClassification;
export declare function isVerifiedSavingsEntry(entry: AnalyticsEntry): boolean;
export declare function isVerifiedExpansionDebit(entry: AnalyticsEntry): boolean;
/** Signed contribution to net MCP transport avoided. */
export declare function verifiedTransportDelta(entry: AnalyticsEntry): number;
export declare function hasObservedReturnedContext(entry: AnalyticsEntry): boolean;
export declare function reportedSavings(entry: AnalyticsEntry): number;
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