/**
 * A2A (Agent-to-Agent) Protocol Implementation
 * Based on JSON-RPC 2.0 for agent communication
 */
export interface A2AMessage {
    jsonrpc: '2.0';
    id: string | number;
    method: string;
    params?: any;
}
export interface A2AResponse {
    jsonrpc: '2.0';
    id: string | number;
    result?: any;
    error?: {
        code: number;
        message: string;
        data?: any;
    };
}
export interface Task {
    id: string;
    status: 'pending' | 'processing' | 'completed' | 'failed';
    input: any;
    output?: any;
    error?: string;
    createdAt: number;
    updatedAt: number;
}
export declare class A2AProtocol {
    private baseUrl;
    private agentId;
    constructor(baseUrl: string, agentId: string);
    sendTask(input: any): Promise<Task>;
    getTask(taskId: string): Promise<Task>;
    cancelTask(taskId: string): Promise<boolean>;
    private makeRequest;
}
export declare class A2AServer {
    private handlers;
    private tasks;
    constructor();
    registerHandler(method: string, handler: (params: any) => Promise<any>): void;
    handleRequest(message: A2AMessage): Promise<A2AResponse>;
    createTask(input: any): Task;
    updateTask(taskId: string, updates: Partial<Task>): Task | null;
    getTask(taskId: string): Task | null;
}
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