import type { GuardVerdict } from "./types.js";
export type SanitizedExternalContent = {
    /** Content safe to show to an agent. */
    displayText: string;
    /** Content safe to persist. Null means quarantine instead of indexing it. */
    persistText: string | null;
    verdict: GuardVerdict;
    reason: string;
    findings: string[];
    secretsRedacted: number;
};
/**
 * Apply the complete trust boundary for external content before it is returned
 * to an agent or stored in long-lived memory.
 *
 * Warning/block payloads are deliberately not persisted. Spotlighting is safe
 * for display, but a memory engine can split the wrapper away from the quoted
 * payload and accidentally reactivate the embedded instructions later.
 */
export declare function sanitizeExternalContent(text: string): SanitizedExternalContent;