import type { JsonSchema } from '../../shared/models/tool.model.js';
/**
 * Validates tool arguments against the provided JSON schema
 *
 * @param args - The tool arguments to validate
 * @param schema - The JSON schema to validate against
 * @returns null if valid, or an error message string if invalid
 */
export declare function validateParameters(args: Record<string, unknown>, schema: JsonSchema): string | null;
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