import type { RuleResult } from "../../types.js";
export interface LlmsTxtFetcher {
    (url: string): Promise<string | null>;
}
/**
 * Minimal shape check for the emerging llms.txt convention:
 *   - First non-empty line is an `# H1` title
 *   - At least one `## ` section heading
 *   - At least one markdown link line under a section
 * Deliberately lenient: the spec is still evolving, so only reject obvious garbage.
 */
export declare function validateLlmsTxt(content: string): {
    valid: boolean;
    reason?: string;
};
/**
 * Check for /llms.txt at the origin. Site-level rule — runs once, not per page.
 */
export interface LlmsTxtRuleOptions {
    /** Timeout in ms for the /llms.txt fetch. Default: 10 000. */
    timeoutMs?: number;
}
export declare function llmsTxtRule(source: string, fetcherOrOptions?: LlmsTxtFetcher | LlmsTxtRuleOptions): Promise<RuleResult[]>;
//# sourceMappingURL=llms-txt.d.ts.map