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fp-acp — FP ACP 通信协议

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简介

fp-acp 实现了 FP 的 Agent Communication Protocol(ACP),一个基于 JSON-RPC 2.0 的通信协议。它允许外部进程(IDE 插件、其他 Agent、自动化脚本)通过标准化的 API 与 Agent 交互。

通过 pip install fp-agent[acp] 或 pip install fp-acp 安装。


什么是 ACP?

ACP(Agent Communication Protocol)定义了 Agent 与外部世界之间的标准通信契约。它使得:

  • IDE 集成 — VS Code、Neovim、Emacs 等编辑器通过 ACP 调用 Agent 能力
  • 跨 Agent 通信 — 多个 Agent 实例通过 ACP 协作完成任务
  • 自动化管道 — CI/CD 脚本通过 ACP 集成 Agent 进行代码审查、文档生成等
┌──────────┐    JSON-RPC 2.0    ┌───────────┐
│   IDE    │ ◄────────────────► │  ACP      │
│ 插件/    │                    │  Server   │──► fp-core Agent
│  脚本    │                    │  (fp-acp) │
└──────────┘                    └───────────┘

安装

pip install fp-acp

要求 Python >= 3.11。


快速使用

默认端口

fp-acp

指定主机和端口

fp-acp --host 127.0.0.1 --port 9090

启动日志:

╭─ FP ACP Server ────────────────╮
│                                           │
│  监听地址: tcp://127.0.0.1:9090          │
│  协议: JSON-RPC 2.0                      │
│                                           │
│  按 Ctrl+C 停止服务                       │
╰───────────────────────────────────────────╯

JSON-RPC 接口

ACP 使用标准的 JSON-RPC 2.0 协议,支持以下方法:

核心方法

方法 参数 返回 说明
chat {message, session_id?, stream?} {response} 发送消息并获取回复
chat_stream {message, session_id?} SSE 流 流式聊天(Server-Sent Events)
tools/list {} [{name, description, parameters}] 获取可用工具列表
tools/call {name, arguments} {result} 直接调用工具
sessions/list {} [{id, created_at, message_count}] 列出会话
sessions/create {id?} {id} 创建新会话
sessions/delete {id} {success} 删除会话
sessions/history {id, limit?} [{role, content}] 获取会话历史
config/get {} {config} 获取当前配置
config/set {key, value} {success} 更新配置项
ping {} {pong} 健康检查
shutdown {} {success} 优雅关闭 Server

调用示例

使用 curl

# 发送聊天消息
curl -X POST http://127.0.0.1:9090 \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "chat",
    "params": {
      "message": "你好,请介绍一下自己",
      "session_id": "my-session"
    }
  }'

响应:

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "response": "你好!我是 FP,一个基于生命周期钩子的插件化 Agent。"
  }
}

使用 Python

import httpx

rpc_request = {
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/list",
    "params": {}
}

response = httpx.post("http://127.0.0.1:9090", json=rpc_request)
tools = response.json()["result"]
print(tools)

使用场景

1. VS Code 集成

通过 ACP,VS Code 扩展可以直接调用 Agent 进行代码审查、重构建议、自动补全:

用户选中代码 → 右键 "Ask FP" → ACP Server 返回分析结果

2. 多 Agent 协作

# Agent A 通过 ACP 调用 Agent B 的专业能力
response = httpx.post("http://agent-b:9090", json={
    "jsonrpc": "2.0",
    "method": "chat",
    "params": {"message": "请分析这段代码的安全性: ..."}
})

3. CI/CD 集成

# .github/workflows/code-review.yml
jobs:
  review:
    steps:
      - run: |
          curl -X POST http://agent:9090 \
            -H "Content-Type: application/json" \
            -d '{
              "method": "chat",
              "params": {
                "message": "Review the diff in commit ${{ github.sha }}"
              }
            }'

安全说明

  • ACP Server 默认绑定 127.0.0.1(仅本地访问)
  • 如果需要远程访问,使用 --host 0.0.0.0 并配合防火墙或反向代理
  • 生产环境建议添加 TLS 加密和 API 认证

依赖

依赖 版本 用途
fp-core >= 0.1.0 Agent 核心引擎

许可

MIT © zpb

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