/**
 * GIS data source metadata — provenance, reliability, and caveats.
 *
 * Each GIS tool response includes a `source_metadata` block drawn from
 * these definitions. The goal is to make data quality and upstream
 * limitations visible to callers, not hidden behind a clean API surface.
 */
export interface GisSourceMetadata {
    readonly id: string;
    readonly name: string;
    readonly provider: string;
    readonly licence: string;
    readonly url: string;
    readonly api_key_required: boolean;
    readonly coverage: string;
    readonly update_frequency: string;
    readonly reliability: "high" | "medium" | "low";
    readonly caveats: readonly string[];
    readonly attribution: string;
    readonly verified_at?: string;
}
export declare const GIS_SOURCES: Readonly<Record<string, GisSourceMetadata>>;
/** Health check endpoint for each GIS source. */
export interface GisHealthCheckConfig {
    readonly source_id: string;
    readonly url: string;
    readonly method: "GET" | "POST";
    readonly body?: string;
    readonly timeout_ms: number;
    /** A function that checks whether the response body looks sane. */
    readonly validate: (status: number, body: string) => string | null;
}
export declare const GIS_HEALTH_CHECKS: readonly GisHealthCheckConfig[];