/**
 * Exa API Provider — Neural search + Code context
 *
 * Exa (formerly Metaphor) uses a neural search model that finds pages
 * by semantic similarity rather than keyword matching. Great for
 * "find me articles about X concept" when keyword search fails.
 *
 * Two capabilities:
 *   - search_semantic: neural search across the web
 *   - search_code_context: codebases, docs, StackOverflow, GitHub issues
 *
 * Pricing (as of 2026): ~$1 per 1000 searches + embedding cost for content.
 * Free tier: 1000 queries/month.
 *
 * https://docs.exa.ai
 */
export interface ExaSearchResult {
    title: string;
    url: string;
    publishedDate?: string;
    author?: string;
    text?: string;
    highlights?: string[];
    score?: number;
}
export interface ExaSearchResponse {
    results: ExaSearchResult[];
    autopromptString?: string;
    resolvedSearchType?: string;
}
interface ExaSearchBody {
    query: string;
    type: 'neural' | 'auto' | 'keyword';
    numResults: number;
    contents?: {
        text?: boolean | {
            maxCharacters?: number;
        };
        highlights?: boolean | {
            numSentences?: number;
        };
    };
    category?: 'company' | 'research paper' | 'news' | 'github' | 'tweet' | 'personal site' | 'linkedin profile' | 'financial report';
    startPublishedDate?: string;
    endPublishedDate?: string;
    includeDomains?: string[];
    excludeDomains?: string[];
}
/**
 * Neural semantic search — finds pages by concept, not keywords.
 * Better than Brave/Google for "find me articles about approaches to X" style queries.
 */
export declare function exaNeuralSearch(apiKey: string, query: string, maxResults?: number, options?: {
    category?: ExaSearchBody['category'];
    includeDomains?: string[];
    excludeDomains?: string[];
    includeText?: boolean;
}): Promise<ExaSearchResponse>;
/**
 * Code-context search — optimized for codebases, docs, StackOverflow, GitHub issues.
 * Uses the "github" category + neural search for best code-related retrieval.
 */
export declare function exaCodeSearch(apiKey: string, query: string, maxResults?: number): Promise<ExaSearchResponse>;
export {};
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