/** Options for {@link AgentCard}. All fields are optional and default to empty. */
export type AgentCardOptions = {
    /** Unique identifier for this agent. Default: `''`. */
    agentId?: string;
    /** Human-readable agent name. Default: `''`. */
    name?: string;
    /** Short description of what the agent does. Default: `''`. */
    description?: string;
    /** List of capability tags advertised by the agent. Default: `[]`. */
    capabilities?: string[];
    /** Arbitrary metadata to attach to the card. Default: `{}`. */
    metadata?: Record<string, any>;
};
/** Options for {@link A2AMessage}. All fields are optional. */
export type A2AMessageOptions = {
    /** ID of the agent sending the message. Default: `''`. */
    sourceAgentId?: string;
    /** ID of the agent the message is addressed to. Default: `''`. */
    targetAgentId?: string;
    /** Message kind. Default: `'text'`. */
    messageType?: string;
    /** Message body. Default: `{}`. */
    payload?: Record<string, any>;
};
/** Describes an agent for agent-to-agent (A2A) discovery and routing. */
export type AgentCard = {
    agentId: string;
    name: string;
    description: string;
    capabilities: string[];
    metadata: Record<string, any>;
};
/** Create an {@link AgentCard}, filling unset fields with empty defaults. */
export declare function AgentCard(opts?: AgentCardOptions): AgentCard;
/** A message exchanged between two agents in an agent-to-agent (A2A) flow. */
export type A2AMessage = {
    sourceAgentId: string;
    targetAgentId: string;
    messageType: string;
    payload: Record<string, any>;
};
/** Create an {@link A2AMessage}. `messageType` defaults to `'text'`. */
export declare function A2AMessage(opts?: A2AMessageOptions): A2AMessage;