/**
 * Injection Detection Hook — AfterTool hook that scans tool results for prompt injection.
 *
 * Scans results from content-reading tools (read_file, web_fetch, grep, glob)
 * for injection patterns. When detected, prepends a warning to the tool result
 * so the LLM knows the content may contain manipulation attempts.
 *
 * Usage:
 * ```typescript
 * const agent = new Agent({
 *   hooks: {
 *     afterTool: [createInjectionDetectionHook()]
 *   }
 * });
 * ```
 */
import type { AfterToolHook } from '../hooks/types.js';
import { type InjectionDetectionResult } from './injection-detection.js';
export interface InjectionHookOptions {
    /** Minimum severity to trigger a warning (default: 'medium') */
    minSeverity?: 'low' | 'medium' | 'high';
    /** Additional tool names to scan */
    additionalTools?: string[];
    /** Called when injection is detected (for logging/telemetry) */
    onDetected?: (result: InjectionDetectionResult, toolName: string) => void;
}
/**
 * Create an afterTool hook that scans content-reading tool results for prompt injection.
 */
export declare function createInjectionDetectionHook(options?: InjectionHookOptions): AfterToolHook;