/**
 * Resolving credentials, and the multi-publication model.
 *
 * Three sources, in priority order:
 *   1. SUBSTACK_PUBLICATIONS  a JSON array, for several publications at once
 *   2. SUBSTACK_*             the single-publication environment variables
 *   3. ~/.substack-mcp/session.json  whatever `substack-mcp login` captured
 *
 * One Substack login often owns more than one publication. Every tool that
 * touches a specific publication takes an optional `publication` argument
 * matched loosely against the hostname, defaulting to the first configured one.
 */
export type Credentials = {
    publicationUrl: string;
    sessionToken: string;
    userId?: string;
};
export type Config = {
    publications: Credentials[];
    readOnly: boolean;
    allowDestructive: boolean;
    requestTimeoutMs: number;
    userAgent: string;
    minRequestIntervalMs: number;
    maxRetries: number;
    auditPath?: string;
};
export declare const DEFAULT_USER_AGENT = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36";
/** Strip scheme, path and trailing slashes down to a bare hostname. */
export declare function normalizeHost(raw: string): string;
export declare function loadConfig(): Config;
/**
 * Pick which publication a call targets.
 *
 * `hint` is matched loosely against the hostname so "example" finds
 * "example.substack.com". With no hint, the first configured publication wins.
 */
export declare function selectPublication(config: Config, hint?: string): Credentials;