import type { RuntimeActionResultHookPayload, SubagentAuthorizationEventHookPayload, SubagentInputRequestHookPayload } from "#channel/types.js";
import type { RuntimeSubagentChildResult, RuntimeSubagentResult } from "#shared/action-types.js";
import type { JsonValue } from "#shared/json.js";
import type { JsonObject } from "#shared/json.js";
import type { AgentInput } from "#tools/workflow-definition.js";
import type { ToolContext } from "#tools/definition.js";
export type InternalAgentInput = {
    readonly agentId?: string;
    readonly message: string;
    readonly outputSchema?: JsonObject;
    readonly target: string;
};
/**
 * Asks the owning session to spawn an agent for a workflow tool run. Spawning
 * needs owner-held material (auth, capabilities, admission, the agent handle
 * store) that a workflow tool body never has.
 */
export interface AgentInvocationRequest {
    readonly input: InternalAgentInput;
    readonly invocationId: string;
    readonly kind: "agent-invoke";
}
/**
 * Tells the owning session that an owner-spawned agent replied to the run, so
 * the owner can release the handle it reserved for `agent-invoke`.
 */
export interface AgentSettlementRequest {
    readonly kind: "agent-settled";
    readonly result: RuntimeSubagentChildResult;
}
export type AgentInvocationEvent = SubagentAuthorizationEventHookPayload | SubagentInputRequestHookPayload;
export type AgentInvocationReply = AgentInvocationEvent | RuntimeActionResultHookPayload;
/** Invokes an agent from a workflow tool. */
export declare function agent(ctx: ToolContext, target: string, input: AgentInput): Promise<JsonValue>;
/** Invokes an agent with a framework-selected replay-stable invocation id. */
export declare function invokeAgent(ctx: ToolContext, input: InternalAgentInput, options: {
    readonly invocationId: string;
    readonly returnResult: true;
}): Promise<JsonValue | RuntimeSubagentResult>;
export declare function invokeAgent(ctx: ToolContext, input: InternalAgentInput, options?: {
    readonly invocationId?: string;
    readonly returnResult?: false;
}): Promise<JsonValue>;
export declare function validateAgentInput(input: InternalAgentInput): void;