/**
 * Agent message detection
 */
import type { ParsedEmail } from "../types.js";
import type { ResolvedA2AConfig, AgentDetection } from "./types.js";
import type { EmailLogger } from "../utils/logger.js";
/**
 * Detect if an email is from another agent
 */
export declare function detectAgentMessage(email: ParsedEmail, a2aConfig: ResolvedA2AConfig, log?: EmailLogger): AgentDetection;
/**
 * Check if turn exceeds maximum
 */
export declare function isTurnExceeded(turn: number, maxTurns: number): boolean;