/**
 * log10x_discover_labels — metadata discovery for Claude.
 *
 * Without this tool, Claude has to guess which labels exist when a user asks
 * "show me errors by namespace" — and the guess is often wrong (`k8s_ns`,
 * `namespace`, `kube_namespace`). With it, Claude calls discover_labels once
 * per session and gets the real label set before constructing filter args
 * for any other tool.
 *
 * Wraps Prometheus /api/v1/labels and /api/v1/label/{name}/values.
 */
import { z } from 'zod';
import type { EnvConfig } from '../lib/environments.js';
import { type StructuredOutput } from '../lib/output-types.js';
export declare const discoverLabelsSchema: {
    label: z.ZodOptional<z.ZodString>;
    limit: z.ZodDefault<z.ZodNumber>;
    environment: z.ZodOptional<z.ZodString>;
};
export declare function executeDiscoverLabels(args: {
    label?: string;
    limit?: number;
}, env: EnvConfig): Promise<string | StructuredOutput>;