export interface A2AAgentCard {
    name: string;
    description: string;
    url: string;
    version: string;
    capabilities: {
        streaming: boolean;
        pushNotifications: boolean;
        stateTransitionHistory: boolean;
    };
    skills: A2AAgentSkill[];
    defaultInputModes: string[];
    defaultOutputModes: string[];
    authentication?: {
        schemes: string[];
    };
}
export interface A2AAgentSkill {
    id: string;
    name: string;
    description: string;
    tags: string[];
    examples?: string[];
}
export interface A2ATask {
    id: string;
    sessionId: string;
    status: A2ATaskStatus;
    history: A2AMessage[];
    artifacts: A2AArtifact[];
    metadata?: Record<string, any>;
}
export type A2ATaskState = 'submitted' | 'working' | 'input-required' | 'completed' | 'canceled' | 'failed';
export interface A2ATaskStatus {
    state: A2ATaskState;
    message?: A2AMessage;
    timestamp: string;
}
export interface A2AMessage {
    role: 'user' | 'agent';
    parts: A2AMessagePart[];
}
export type A2AMessagePart = {
    type: 'text';
    text: string;
} | {
    type: 'file';
    file: {
        name: string;
        mimeType: string;
        bytes?: string;
        uri?: string;
    };
} | {
    type: 'data';
    data: Record<string, any>;
};
export interface A2AArtifact {
    name: string;
    description?: string;
    parts: A2AMessagePart[];
    index: number;
    append?: boolean;
    lastChunk?: boolean;
}
export interface JsonRpcRequest {
    jsonrpc: '2.0';
    id: string | number;
    method: string;
    params?: any;
}
export interface JsonRpcResponse {
    jsonrpc: '2.0';
    id: string | number | null;
    result?: any;
    error?: {
        code: number;
        message: string;
        data?: any;
    };
}
export declare const JSON_RPC_ERRORS: {
    readonly PARSE_ERROR: -32700;
    readonly INVALID_REQUEST: -32600;
    readonly METHOD_NOT_FOUND: -32601;
    readonly INVALID_PARAMS: -32602;
    readonly INTERNAL_ERROR: -32603;
    readonly TASK_NOT_FOUND: -32001;
    readonly TASK_CANCELED: -32002;
};
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