import type { HttpProtocolClient, ProtocolRequestPayload } from '../http-protocol-client.js';
export type ResponsesStreamingMode = 'auto' | 'always' | 'never';
export interface ResponsesClientConfig {
    streaming?: ResponsesStreamingMode;
    betaVersion?: string;
}
export declare class ResponsesProtocolClient implements HttpProtocolClient<ProtocolRequestPayload> {
    private readonly streaming;
    private readonly betaVersion;
    constructor(config?: ResponsesClientConfig);
    buildRequestBody(request: ProtocolRequestPayload): Record<string, unknown>;
    resolveEndpoint(_request: ProtocolRequestPayload, defaultEndpoint: string): string;
    finalizeHeaders(headers: Record<string, string>, _request: ProtocolRequestPayload): Record<string, string>;
    getStreamingPreference(): ResponsesStreamingMode;
    ensureStreamFlag(body: Record<string, unknown>, useStream: boolean): void;
    private extractPayload;
}