/**
 * MCP config loader functions.
 *
 * Reads padua.config.json (mcp key) and mcp-providers.json,
 * validates with Zod schemas from types.ts, and returns typed defaults.
 */
import { McpLocalConfig, McpProvidersConfig } from './types.js';
/**
 * Returns a fresh McpLocalConfig object containing all default values.
 * All fields are populated so callers can rely on the result being complete.
 */
export declare function getDefaultMcpConfig(): McpLocalConfig;
/**
 * Reads the `mcp` key from `~/.padua/padua.config.json` (or `configPath`) and
 * returns a validated McpLocalConfig merged over the defaults.
 *
 * Returns defaults when:
 * - The file does not exist.
 * - The file exists but has no `mcp` key.
 *
 * Throws ValidationError (code INVALID_CONFIG) when:
 * - The `mcp` key is present but fails Zod validation.
 * - The file contains invalid JSON.
 */
export declare function loadMcpConfig(configPath?: string): McpLocalConfig;
/**
 * Reads `~/.padua/mcp-providers.json` (or `configPath`) and returns a validated
 * McpProvidersConfig.
 *
 * Returns null when the file does not exist (not an error condition — the user
 * simply has not downloaded the provider config yet).
 *
 * Throws ValidationError (code INVALID_CONFIG) when:
 * - The file exists but fails Zod validation.
 * - The file contains invalid JSON.
 */
export declare function loadProvidersConfig(configPath?: string): McpProvidersConfig | null;
/**
 * Downloads the provider config from S3 using the active SSO profile and writes
 * it to `~/.padua/mcp-providers.json` with permissions 0o600.
 *
 * Throws an Error when the aws CLI exits with a non-zero status code.
 */
export declare function downloadProvidersConfig(profile: string): Promise<void>;
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