import { foldAgentStreamNdjson, iterateAgentStreamNdjson, type AgentStreamEvent, type AgentStreamReduceState, type ContinueAgentSessionResponse, type FoldAgentStreamOptions, type StartAgentSessionResponse } from "@zhin.js/contract";
export type AgentStreamClientOptions = {
    fetch?: typeof fetch;
};
/** POST /zhin/v1/session — start a Host agent session turn. */
export declare function startAgentSession(message: string, options?: AgentStreamClientOptions): Promise<StartAgentSessionResponse>;
/** POST /zhin/v1/session/:sessionId — continue with continuationToken + message. */
export declare function continueAgentSession(sessionId: string, continuationToken: string, message: string, options?: AgentStreamClientOptions): Promise<ContinueAgentSessionResponse>;
export type SubscribeAgentStreamOptions = FoldAgentStreamOptions & {
    startIndex?: number;
    fetch?: typeof fetch;
    onEvent?: (event: AgentStreamEvent, state: AgentStreamReduceState) => void;
};
/** GET /zhin/v1/session/:sessionId/stream — consume NDJSON until the stream closes. */
export declare function subscribeAgentStream(sessionId: string, options?: SubscribeAgentStreamOptions): Promise<AgentStreamReduceState>;
export { iterateAgentStreamNdjson, foldAgentStreamNdjson };
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