/**
 * Human-readable labels for the built-in metrics.
 *
 * A metric summary is keyed by its factory name, and a bare `agent.calledTool` does not tell a
 * reader which tool the eval actually asserted on. Each label is built from the metric name plus
 * the config its factory captured, so the parameter that makes the assertion specific travels with
 * the result into reports and CLI output.
 *
 * @module
 */
/**
 * Describe a metric in prose. Returns `undefined` for names with no known phrasing so callers can
 * fall back to the raw metric name rather than print a worse guess.
 */
export declare function formatEvalMetricLabel(name: string, config?: Record<string, unknown>): string | undefined;
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