import type { ServerResponse } from "node:http";
import type { JinnConfig } from "../shared/types.js";
import type { RealtimeNoiseReduction, RealtimeTool } from "../shared/voice.js";
/**
 * Mint a provider credential, optionally requiring it to outlive a predecessor.
 *
 * Configuration gaps and provider failures are translated into the Talk HTTP
 * contract here so callers only need to decide which tool catalog to expose.
 */
export declare function mintTalkToken(res: ServerResponse, config: JinnConfig, tools: RealtimeTool[], expiresAfter?: number, noiseReduction?: RealtimeNoiseReduction): Promise<{
    vadType: "semantic_vad" | "server_vad";
    noiseReduction: RealtimeNoiseReduction;
    value: string;
    expiresAt: number;
} | null>;
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