import type { AdapterInvokeRequest, AdapterInvokeResult, SkillAdapter } from "../../../executor/src/index.js";
export declare const a2aAdapterPackage = "@runx/adapter-a2a";
export interface A2aTask {
    readonly id: string;
    readonly status: "submitted" | "working" | "completed" | "failed" | "canceled";
    readonly output?: unknown;
    readonly error?: string;
}
export interface A2aTransport {
    readonly sendMessage: (request: A2aSendMessageRequest) => Promise<A2aTask>;
    readonly getTask: (request: A2aGetTaskRequest) => Promise<A2aTask>;
    readonly cancelTask?: (request: A2aGetTaskRequest) => Promise<A2aTask>;
}
export interface A2aSendMessageRequest {
    readonly agentCardUrl: string;
    readonly agentIdentity?: string;
    readonly task: string;
    readonly message: Readonly<Record<string, unknown>>;
}
export interface A2aGetTaskRequest {
    readonly agentCardUrl: string;
    readonly taskId: string;
}
export interface A2aAdapter extends SkillAdapter {
    readonly type: "a2a";
}
export interface CreateA2aAdapterOptions {
    readonly transport?: A2aTransport;
}
export declare function createA2aAdapter(options?: CreateA2aAdapterOptions): A2aAdapter;
export declare function invokeA2a(request: AdapterInvokeRequest, options?: CreateA2aAdapterOptions): Promise<AdapterInvokeResult>;
export declare function createFixtureA2aTransport(): A2aTransport;