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yu-acp

v1.1.1

Published

Electron IDE Agent Client Protocol Package

Readme

余(Yu)

npm License: MIT

Agent Client Protocol (ACP) 的 TypeScript 客户端库,为 Electron IDE 设计。负责 agent 进程的生命周期管理、JSON-RPC 通信、会话管理以及终端/文件操作代理。

安装

npm install yu-acp

要求 Node.js >= 20。本包为 ESM only。

快速开始

import { AcpClient } from "yu-acp";

const client = new AcpClient({
  agent: {
    id: "my-agent",
    name: "My Agent",
    version: "1.0.0",
    distribution: { npx: { package: "my-acp-agent" } },
  },
});

// 启动 agent 进程并建立连接
await client.start();

// 创建会话
const session = await client.createSession({
  cwd: process.cwd(),
  mcpServers: [],
});

// 监听 agent 的流式更新
session.on("session:update", (notification) => {
  const update = notification.update;
  if (update.sessionUpdate === "agent_message_chunk") {
    process.stdout.write(update.content.text ?? "");
  }
});

// 发送 prompt
const response = await session.prompt("Hello!");
console.log("Stop reason:", response.stopReason);

// 停止 agent
await client.stop();

Agent 分发方式

AgentConfig.distribution 支持三种方式启动 agent:

// npx — 通过 npm 包运行
{ npx: { package: "@some-org/acp-agent" } }

// uvx — 通过 Python uv 包运行
{ uvx: { package: "some-python-agent" } }

// binary — 直接运行可执行文件
{ binary: { command: "/path/to/agent", args: ["--flag"] } }

可通过 env 字段为 agent 进程注入环境变量:

const client = new AcpClient({
  agent: {
    id: "my-agent",
    name: "My Agent",
    version: "1.0.0",
    distribution: { npx: { package: "my-acp-agent" } },
    env: { API_KEY: "sk-..." },
  },
});

客户端能力(Capabilities)

通过 capabilities 选项声明客户端支持的功能,agent 可据此决定是否使用终端、文件读写等操作:

const client = new AcpClient({
  agent: { /* ... */ },
  capabilities: {
    terminal: true,
  },
});

自定义 Handler

客户端默认使用 Node.js fs 处理文件操作。可自定义以适配 IDE 虚拟文件系统或权限对话框:

// 自定义权限处理
client.setPermissionHandler(async (request) => {
  const allowed = await showPermissionDialog(request);
  return { outcome: { outcome: allowed ? "approved" : "denied" } };
});

// 自定义文件读写
client.setFileReadHandler(async (request) => {
  const content = await myEditor.readFile(request.path);
  return { content };
});

client.setFileWriteHandler(async (request) => {
  await myEditor.writeFile(request.path, request.content);
  return {};
});

自动重启

agent 进程意外退出时可自动重启:

const client = new AcpClient({
  agent: { /* ... */ },
  autoRestart: true,
  maxRestarts: 3,     // 默认 3
  restartDelay: 1000, // 默认 1000ms
});

事件

AcpClient 事件

client.on("process:spawn", () => {});
client.on("process:exit", (code, signal) => {});
client.on("process:error", (error) => {});
client.on("process:restart", (attempt) => {});
client.on("connection:ready", () => {});
client.on("connection:closed", () => {});
client.on("error", (error) => {});

AcpSession 事件

session.on("session:update", (notification) => {});
session.on("prompt:complete", (response) => {});
session.on("error", (error) => {});

Registry

查询 ACP 公共 agent 注册表:

import { RegistryClient } from "yu-acp";

const registry = new RegistryClient();

// 列出所有已注册的 agent
const agents = await registry.listAgents();

// 按 ID 查找
const agent = await registry.getAgent("some-agent-id");

API 参考

AcpClient

| 方法 | 说明 | |------|------| | start() | 启动 agent 进程并完成协议握手 | | stop() | 终止 agent 进程,释放所有终端 | | createSession(params) | 创建新会话 | | loadSession(params) | 加载已有会话 | | authenticate(params) | 认证 | | setPermissionHandler(handler) | 设置权限请求处理器 | | setFileReadHandler(handler) | 设置文件读取处理器 | | setFileWriteHandler(handler) | 设置文件写入处理器 | | connected | 是否已连接 |

AcpSession

| 方法 | 说明 | |------|------| | prompt(content) | 发送 prompt,接受 stringContentBlock[] | | cancel() | 取消当前请求 | | setMode(modeId) | 切换会话模式 | | sessionId | 会话 ID |

RegistryClient

| 方法 | 说明 | |------|------| | listAgents() | 列出所有 agent | | getAgent(id) | 按 ID 获取 agent | | fetchRegistry(force?) | 获取完整注册表(带 TTL 缓存) | | clearCache() | 清除缓存 |

License

MIT

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