/**
 * Generic payload parser/formatter used by `amux hooks handle <agent> <hookType>`.
 *
 * Each harness emits a hook payload as JSON on stdin. The default
 * implementation accepts any JSON object and normalizes a few commonly
 * used fields (tool_name, tool_input, tool_output, prompt, message,
 * session_id) into `payload.data`, preserving the full original payload
 * under `payload.raw` for adapter-specific round-tripping.
 */
import type { AgentName } from './types.js';
import type { UnifiedHookPayload, UnifiedHookResult } from './hooks.js';
export declare function parseHookPayload(agent: AgentName | string, hookType: string, raw: unknown): UnifiedHookPayload;
/**
 * Format a unified hook result back into the shape most harnesses expect:
 * a JSON object written to stdout, plus an exit code.
 *
 * Convention:
 *   { decision, message?, modifiedInput? }
 * harnesses that treat exit 2 as "block" will honor the deny path.
 */
export declare function formatHookResult(_agent: AgentName | string, _hookType: string, result: UnifiedHookResult): {
    stdout: string;
    exitCode: number;
};