import type { GuardrailsConfig } from '../config/schema';
/** Tool call input structure */
interface ToolInput {
    sessionID: string;
    tool?: string;
    agent?: string;
}
/** Tool call output structure */
interface ToolOutput {
    result?: unknown;
    error?: unknown;
}
/**
 * Create guardrail hooks for tracking and limiting tool usage.
 * @param config - Guardrails configuration
 * @returns Object with toolBefore and toolAfter hooks
 */
export declare function createGuardrailsHook(config: GuardrailsConfig): {
    toolBefore: (input: ToolInput) => Promise<void>;
    toolAfter: (input: ToolInput, output: ToolOutput) => Promise<void>;
};
export {};