import type { A2ACorrelationMetadata } from "./types.js";
export declare const MAX_A2A_CORRELATION_VALUE_CHARS = 200;
export declare function sanitizeA2ACorrelationId(value: unknown): string | undefined;
/**
 * Keep only bounded, opaque ASCII correlation identifiers. These values
 * remain telemetry hints; authentication continues to come exclusively from
 * the verified A2A token/request context.
 */
export declare function sanitizeA2ACorrelationMetadata(value: unknown): A2ACorrelationMetadata;
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