/**
 * LangChain integration — add reliability scoring to any LangChain chain.
 *
 * Usage:
 *   import { ShipReliability } from '@ship-protocol/reliability-sdk';
 *   const ship = new ShipReliability({ domain: 'code' });
 *   chain = chain.pipe(ship.asLangChainMiddleware());
 */
import type { IReliabilityScore, IShipReliabilityConfig } from '../core/types.js';
/** Result from a LangChain middleware call — original output + reliability score. */
export interface ILangChainReliabilityResult {
    output: unknown;
    reliability: IReliabilityScore;
}
/**
 * Create a standalone LangChain middleware function.
 * This is an alternative to `ship.asLangChainMiddleware()` for cases where
 * you want to configure the middleware separately.
 */
export declare function createLangChainMiddleware(config?: IShipReliabilityConfig): (input: unknown) => Promise<ILangChainReliabilityResult>;
/**
 * LangChain callback handler for scoring chain outputs.
 * Implement this as a LangChain BaseCallbackHandler for event-based scoring.
 */
export declare class ShipReliabilityCallback {
    private ship;
    private scores;
    constructor(config?: IShipReliabilityConfig);
    onChainEnd(output: unknown): Promise<IReliabilityScore>;
    getScores(): IReliabilityScore[];
    getAverageScore(): number;
}
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