/**
 * ACP Registry integration. Resolves curated ACP-compatible agents (for
 * example the registry-backed `Codex CLI` and `Claude Agent` adapters) from the
 * ACP Registry so they can drive the generic ACP front door. The install
 * directory is injectable for deterministic testing.
 *
 * Registry source: https://cdn.agentclientprotocol.com/registry/v1/latest/registry.json
 */
import { Effect } from "effect";
import { HttpClient } from "effect/unstable/http";
export declare const ACP_REGISTRY_URL = "https://cdn.agentclientprotocol.com/registry/v1/latest/registry.json";
export type AcpRegistryAgent = {
    id: string;
    name?: string;
    version?: string;
    description?: string;
    distribution?: Record<string, unknown>;
};
export type AcpRegistry = {
    agents: AcpRegistryAgent[];
};
export type InstalledAcpAdapter = {
    id: string;
    name: string;
    version: string;
    distribution: Record<string, unknown>;
    installedAt: string;
    metadataPath: string;
};
export declare function fetchAcpRegistry(url?: string): Effect.Effect<AcpRegistry, Error, HttpClient.HttpClient>;
export type InstallAcpAdaptersOptions = {
    agentIds: string[];
    installDir: string;
    url?: string;
};
export declare function installAcpAdapters(options: InstallAcpAdaptersOptions): Effect.Effect<InstalledAcpAdapter[], Error, HttpClient.HttpClient>;