/**
 * HTTP client for Proxmox VE API.
 *
 * Uses native fetch (Node 18+) with PVE API Token authentication.
 * All PVE JSON responses are wrapped in {"data": ...} — this client
 * unwraps them so callers get clean data.
 */
import type { AppConfig } from "../types/index.js";
export declare class PveClient {
    private readonly authHeader;
    private readonly apiBase;
    private readonly baseUrl;
    constructor(config: AppConfig);
    /** Send a GET request and return unwrapped data. */
    get(path: string): Promise<unknown>;
    /** Send a POST request with optional body and return unwrapped data. */
    post(path: string, body?: Record<string, unknown>): Promise<unknown>;
    /** Send a PUT request with optional body and return unwrapped data. */
    put(path: string, body?: Record<string, unknown>): Promise<unknown>;
    /** Send a DELETE request and return unwrapped data. */
    delete(path: string): Promise<unknown>;
    /**
     * Validate the connection to PVE by calling GET /api2/json/version.
     * Logs the PVE version on success.
     */
    validateConnection(): Promise<void>;
    /**
     * Core request method. Builds the full URL, sends the request,
     * checks for errors, and unwraps PVE's {"data": ...} envelope.
     */
    private request;
}
/**
 * Create a PVE client from config.
 * Registers credentials as sensitive patterns before creating the client.
 */
export declare function createClient(config: AppConfig): PveClient;
/**
 * Validate connectivity to PVE.
 * Must be called during startup before accepting MCP connections.
 * Exits the process with code 1 if validation fails.
 */
export declare function validateConnection(client: PveClient): Promise<void>;