GitHub 今日三匹加速狂魔：多智能体协作、Claude Code 工程插件、从零搓技术

# crewai_minimal.py — 最小多智能体协作示例
# 安装: pip install crewai crewai-tools

from crewai import Agent, Task, Crew, Process

# 定义三个角色
planner = Agent(
    role="技术方案规划师",
    goal="根据需求拆解出可执行的技术子任务",
    backstory="你擅长把模糊需求变成清晰的步骤清单",
    verbose=True,
)

coder = Agent(
    role="代码实现工程师",
    goal="按照规划清单逐项写出可运行的代码",
    backstory="你只写代码，不做架构决策",
    verbose=True,
)

reviewer = Agent(
    role="代码审查员",
    goal="检查代码是否有 bug、是否遗漏边界情况",
    backstory="你只找问题，不写代码",
    verbose=True,
)

# 定义任务链
plan_task = Task(
    description="为以下需求制定技术方案：实现一个命令行工具，接收 CSV 文件路径，输出按第二列排序后的 JSON",
    expected_output="包含 3-5 个子步骤的方案清单",
    agent=planner,
)

code_task = Task(
    description="按照方案清单实现代码，输出完整 Python 脚本",
    expected_output="可直接运行的 .py 文件内容",
    agent=coder,
)

review_task = Task(
    description="审查上一步产出的代码，列出所有问题并给出修改建议",
    expected_output="问题清单 + 修改后的完整代码",
    agent=reviewer,
)

# 组建 Crew，顺序执行
crew = Crew(
    agents=[planner, coder, reviewer],
    tasks=[plan_task, code_task, review_task],
    process=Process.sequential,  # 顺序执行，也可选 hierarchical
)

result = crew.kickoff()
print(result)

# .claude/settings.yml — Claude Code 项目级工程配置
# 放在项目根目录，Claude Code 启动时自动加载

commands:
  lint:
    description: "运行项目 lint 并把结果喂给 Claude"
    run: "ruff check . --output-format=json"
  test:
    description: "跑单测并返回失败详情"
    run: "pytest --tb=short -q"

mcp_servers:
  filesystem:
    command: "npx"
    args: ["-y", "@modelcontextprotocol/server-filesystem", "./src", "./tests"]
  git:
    command: "npx"
    args: ["-y", "@modelcontextprotocol/server-git"]

project_rules:
  - "所有新函数必须有类型标注"
  - "优先使用项目已有的 utility 函数，不要重复实现"
  - "修改 API 接口时必须同步更新对应的测试"
  - "提交前必须通过 lint 和 test 命令"

# tiny_http_server.py — 从零搓一个 HTTP 服务器
# 不依赖任何第三方库，直接运行: python tiny_http_server.py

import socket
import os

def handle_request(method, path):
    """根据方法和路径返回响应"""
    if method not in ("GET", "HEAD"):
        return "HTTP/1.1 405 Method Not Allowed\r\nContent-Length: 0\r\n\r\n"

    # 把路径映射到本地文件，防止路径穿越
    safe_path = os.path.normpath(path).lstrip("/")
    filepath = os.path.join("public", safe_path)

    if not os.path.isfile(filepath):
        return "HTTP/1.1 404 Not Found\r\nContent-Length: 9\r\n\r\nNot Found"

    content_type = "text/html" if filepath.endswith(".html") else "text/plain"
    body = b""
    if method == "GET":
        with open(filepath, "rb") as f:
            body = f.read()

    header = (
        f"HTTP/1.1 200 OK\r\n"
        f"Content-Type: {content_type}\r\n"
        f"Content-Length: {len(body)}\r\n"
        f"Connection: close\r\n\r\n"
    )
    return header.encode() + body

def start_server(host="127.0.0.1", port=8080):
    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    server.bind((host, port))
    server.listen(5)
    print(f"Listening on {host}:{port}")

    while True:
        conn, addr = server.accept()
        data = conn.recv(4096).decode("utf-8", errors="ignore")
        if not data:
            conn.close()
            continue

        # 解析请求行: METHOD /path HTTP/1.1
        request_line = data.split("\r\n")[0]
        parts = request_line.split(" ")
        method, path = parts[0], parts[1] if len(parts) > 1 else "/"

        response = handle_request(method, path)
        conn.sendall(response if isinstance(response, bytes) else response.encode())
        conn.close()

if __name__ == "__main__":
    # 先创建一个测试文件
    os.makedirs("public", exist_ok=True)
    with open("public/index.html", "w") as f:
        f.write("<h1>Hello from tiny server</h1>")
    start_server()