import type { AgentEngine } from "../agent/engine/types.js";
import type { ObservabilityConfig } from "./types.js";
export declare const HOSTED_INFERRED_SENTIMENT_SAMPLE_RATE = 1;
export declare const INFERRED_SENTIMENT_MAX_CHARS = 2000;
export declare const INFERRED_SENTIMENT_TIMEOUT_MS = 5000;
export type InferredSentiment = "positive" | "negative" | "neutral";
type SentimentEnv = Record<string, string | undefined>;
export declare function isFirstPartyHostedAgentNative(env?: SentimentEnv): boolean;
export declare function resolveInferredSentimentConfig(stored: Partial<ObservabilityConfig> | null | undefined, env?: SentimentEnv): Pick<ObservabilityConfig, "inferredSentimentEnabled" | "inferredSentimentSampleRate" | "inferredSentimentModel">;
export declare function shouldSampleInferredSentiment(runId: string, sampleRate: number): boolean;
export declare function shouldInferSentimentForTurn(args: {
    internalContinuation: boolean;
    isBackgroundWorker: boolean;
    backgroundContinuationCount: number;
    hasUserText: boolean;
}): boolean;
export declare function parseInferredSentiment(output: string): InferredSentiment | null;
export declare const INFERRED_SENTIMENT_FAILURE_REASONS: readonly ["engine_unavailable", "model_unsupported", "timeout", "parse_failed", "empty"];
export type InferredSentimentFailureReason = (typeof INFERRED_SENTIMENT_FAILURE_REASONS)[number];
export declare function inferAndTrackSentiment(args: {
    /** Explicit engine override; wins over `runEngine`. */
    engine?: AgentEngine;
    /** The engine that served the run being classified. */
    runEngine?: AgentEngine;
    classifierModel: string;
    precedingResponseModel: string;
    text: string;
    precedingRunId: string;
    classificationTriggerRunId: string;
    threadId: string | null;
    userId: string | null;
    sampleRate: number;
}): Promise<void>;
export {};