import { type ConfigDocumentPort, type RootResourceInstaller, type RuntimeConfigDocument } from '@zhin.js/runtime';
export interface SpeechHostConfig {
    readonly stt?: Record<string, unknown>;
    readonly tts?: Record<string, unknown>;
}
export interface SpeechHostTool {
    readonly name: string;
    readonly description: string;
    readonly parameters: {
        readonly type: 'object';
        properties?: Record<string, unknown>;
        required?: string[];
    };
    execute(args: Record<string, unknown>): Promise<unknown>;
    readonly source?: string;
}
export interface SpeechHostHandle {
    readonly tools: readonly SpeechHostTool[];
    readonly sttProvider: string;
    readonly ttsProvider: string;
    /** Inbound preprocess: download URL and transcribe. */
    transcribeUrl(audioUrl: string): Promise<string | null>;
}
export declare function resolveSpeechConfig(config: RuntimeConfigDocument | ConfigDocumentPort): Promise<SpeechHostConfig | undefined>;
/**
 * Optional Speech Host:
 * - top-level `speech:` → createSpeechPipeline + seedSpeechPipeline (TTS rich segment)
 * - exposes voice_stt / voice_tts tools for Agent Host
 */
export declare function prepareSpeechHost(config: SpeechHostConfig | undefined): Promise<SpeechHostHandle | undefined>;
export declare function installSpeechHost(handle: SpeechHostHandle | undefined): RootResourceInstaller;
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