import type { Transport } from '@modelcontextprotocol/sdk/shared/transport.js';
import type { OAuthClientProvider } from '@modelcontextprotocol/sdk/client/auth.js';
import type { McpServerConfig } from './types.js';
import { type McpServerLayer } from './env-containment.js';
export declare function expandHeaders(headers: Record<string, string> | undefined, source?: NodeJS.ProcessEnv): {
    headers: Record<string, string>;
    missing: string[];
};
export interface CreateTransportResult {
    transport: Transport;
    isSSE: boolean;
}
export declare function createTransport(serverName: string, config: McpServerConfig, oauthProvider?: OAuthClientProvider, layer?: McpServerLayer, trustedAllowSecretEnv?: readonly string[]): CreateTransportResult;