/**
 * HiveTendril — Node client for the VECNA Hive Nexus.
 *
 * Embedders use this when calling from within a Node process. Shell-driven
 * agents use the `vecna` CLI (which wraps the same HTTP surface).
 *
 * Errors carry a useful message; HTTP transport failures bubble as
 * `Error` with `code: "hive_unreachable"` so callers can distinguish
 * "service down" from "bad input".
 */
import type { ConnectInput, ConnectResult, EvolveInput, EvolveResult, Fragment, RecallOptions } from "./types.js";
export interface HiveTendrilOptions {
    url?: string;
    authToken?: string | null;
    timeoutMs?: number;
    /** Test seam — defaults to global `fetch`. */
    fetchImpl?: typeof globalThis.fetch;
}
export declare class HiveTendril {
    private readonly config;
    private readonly fetchImpl;
    constructor(opts?: HiveTendrilOptions);
    healthz(): Promise<{
        ok: boolean;
        db: "up" | "down";
        version: string;
    }>;
    connect(input: ConnectInput): Promise<ConnectResult>;
    recall(topic: string, opts?: RecallOptions): Promise<{
        topic: string;
        count: number;
        fragments: Fragment[];
    }>;
    recallAsContext(topic: string, opts?: RecallOptions): Promise<string>;
    search(query: string, limit?: number): Promise<{
        query: string;
        count: number;
        fragments: Fragment[];
    }>;
    getFragment(id: string): Promise<Fragment | null>;
    evolve(id: string, input: EvolveInput): Promise<EvolveResult>;
    private request;
    private requestText;
}
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