/**
 * Agent-to-agent collaboration types
 */
import type { A2AConfig } from "../types.js";
/**
 * Resolved A2A configuration
 */
export interface ResolvedA2AConfig {
    /** Is A2A enabled */
    enabled: boolean;
    /** Domains that host agents */
    agentDomains: string[];
    /** Maximum ping-pong turns */
    maxPingPongTurns: number;
}
/**
 * Agent detection result
 */
export interface AgentDetection {
    /** Is this an agent message */
    isAgent: boolean;
    /** Remote agent ID (if detected) */
    agentId: string | null;
    /** Current turn number (from header) */
    turn: number;
}
/**
 * Email headers for A2A
 */
export declare const A2A_HEADERS: {
    readonly AGENT: "x-openclaw-agent";
    readonly TURN: "x-openclaw-turn";
};
/**
 * Special stop tokens
 */
export declare const A2A_TOKENS: {
    readonly NO_REPLY: "NO_REPLY";
};
/**
 * Resolve A2A config from raw config
 */
export declare function resolveA2AConfig(a2a?: A2AConfig): ResolvedA2AConfig;