/**
 * Shared instance parameter helper for multi-Grafana-instance support.
 *
 * Returns an empty object for single-instance setups (agent never sees the param).
 * Returns { instance: schema } for multi-instance (with actual names baked into description).
 */
import type { GrafanaClientRegistry } from "../grafana-client-registry.js";
/**
 * Conditionally produces the `instance` property for tool parameter schemas.
 * Spread into `parameters.properties`: `{ ...instanceProperties(registry), expr: {...} }`.
 */
export declare function instanceProperties(registry: GrafanaClientRegistry): Record<string, unknown>;