/**
 * Agent — pure configuration. Holds no run/session state.
 * Handoffs are exposed to the model as virtual transfer_to_* tools by the Runner.
 */
import { z } from "zod";
import type { GuardrailSet, ModelProvider, ToolDefinition } from "../types";
export interface AgentConfig<TOutput = string, TContext = Record<string, unknown>> {
    name: string;
    instructions: string;
    model: ModelProvider;
    tools?: ToolDefinition<any, any, TContext>[];
    outputSchema?: z.ZodType<TOutput>;
    guardrails?: GuardrailSet<TContext>;
    handoffs?: Agent<any, TContext>[];
}
/** Pure configuration — holds no run state. */
export declare class Agent<TOutput = string, TContext = Record<string, unknown>> {
    readonly name: string;
    readonly instructions: string;
    readonly model: ModelProvider;
    readonly tools: ToolDefinition<any, any, TContext>[];
    readonly outputSchema?: z.ZodType<TOutput>;
    readonly guardrails?: GuardrailSet<TContext>;
    readonly handoffs: Agent<any, TContext>[];
    constructor(config: AgentConfig<TOutput, TContext>);
    findHandoffTarget(name: string): Agent<any, TContext> | undefined;
    /** Depth-first search of this agent + handoff graph by name. */
    findAgentInGraph(name: string): Agent<any, TContext> | undefined;
}
export declare function handoffToolName(agentName: string): string;
export declare function isHandoffToolName(name: string): boolean;
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