import type { SourceConfidence, WebEvidenceRecord } from "./types.js";
export interface ConfidenceInput {
    fetched: boolean;
    record?: Pick<WebEvidenceRecord, "publishedAt" | "author" | "title" | "canonicalUrl" | "truncated" | "relevantPassages" | "contentSha256">;
}
export declare function deriveSourceConfidence(input: ConfidenceInput): SourceConfidence;
export declare function describeConfidence(confidence: SourceConfidence): string;
/** A search snippet may be used only for discovery; it cannot establish exact claims. */
export declare const SEARCH_SNIPPETS_ARE_DISCOVERY_ONLY = true;
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