import { Transport } from '@modelcontextprotocol/sdk/shared/transport.js';
import { OAuthClientProvider } from '@modelcontextprotocol/sdk/client/auth.js';
export interface HttpTransportConfig {
    type: 'http';
    url: string;
    headers?: Record<string, string>;
    fetch?: typeof fetch;
    authProvider?: OAuthClientProvider;
}
export interface SseTransportConfig {
    type: 'sse';
    url: string;
    headers?: Record<string, string>;
    fetch?: typeof fetch;
    authProvider?: OAuthClientProvider;
}
/** stdio is declared here for typing but constructed only via `@tanstack/ai-mcp/stdio`. */
export interface StdioTransportConfig {
    type: 'stdio';
    command: string;
    args?: Array<string>;
    env?: Record<string, string>;
    cwd?: string;
}
export type TransportConfig = HttpTransportConfig | SseTransportConfig | StdioTransportConfig;
/** Either a built-in config or a ready-made SDK Transport instance (escape hatch). */
export type TransportInput = TransportConfig | Transport;
export declare function isTransportInstance(input: TransportInput): input is Transport;
export declare function resolveTransport(input: TransportInput): Promise<Transport>;