import type { VoiceConnectOptions, VoiceProvider, VoiceSession } from './voice.js';
export interface OpenAIRealtimeVoiceProviderOptions {
    apiKey: string;
    /** Realtime model id. Default `gpt-realtime`. */
    model?: string;
    /** Override base URL — useful for Azure or compatible gateways. */
    baseUrl?: string;
    /** Provider name override for telemetry. Default `openai-realtime`. */
    name?: string;
    /** Extra headers (e.g. organization id). */
    headers?: Record<string, string>;
}
/**
 * OpenAI Realtime voice provider. Connects via WebSocket; emits
 * `audio_delta` / `text_delta` / `transcript` / `tool_call` / `response_done`
 * events. No transitive dependency on `ws` — uses the global `WebSocket`
 * available on Node 22+ and browsers.
 *
 * ```ts
 * const provider = new OpenAIRealtimeVoiceProvider({ apiKey });
 * const session = await provider.connect({
 *   instructions: 'You are a friendly intake agent.',
 *   voice: 'alloy',
 *   tools: [submitField],
 * });
 * for await (const event of session.events()) {
 *   if (event.type === 'audio_delta') speaker.write(event.audio);
 *   if (event.type === 'tool_call') {
 *     const output = await runTool(event.name, event.input);
 *     await session.submitToolResult({ id: event.id, output });
 *   }
 *   if (event.type === 'response_done') break;
 * }
 * ```
 */
export declare class OpenAIRealtimeVoiceProvider implements VoiceProvider {
    readonly name: string;
    private readonly apiKey;
    private readonly model;
    private readonly baseUrl;
    private readonly extraHeaders;
    constructor(options: OpenAIRealtimeVoiceProviderOptions);
    connect(options?: VoiceConnectOptions): Promise<VoiceSession>;
}
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