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NexAgent - AI 对话框架,支持多服务商、多模型切换、深度思考、工具调用、流式输出、多会话管理

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NexAgent

PyPI version Python versions License

AI 对话框架,支持多模型、多会话、工具调用、MCP 协议、深度思考、记忆功能、角色卡。

特性

  • 🔄 多模型切换 - 支持 OpenAI、DeepSeek 等兼容 API
  • 💬 多会话管理 - 独立上下文,消息编辑/重新生成
  • 🎭 角色卡 - 自定义 AI 人设和参数
  • 🧠 记忆功能 - 基于向量的长期记忆
  • 🔧 工具调用 - 内置 + 自定义 + MCP 工具
  • 🧩 插件系统 - 扩展功能,注册工具和API路由
  • 💭 深度思考 - 展示 AI 推理过程
  • 📡 流式输出 - 实时返回内容
  • 🌐 WebUI - 现代化界面,深色/浅色主题

快速开始

pip install nex-agent

nex init          # 初始化工作目录
nex serve         # 启动服务 (默认 6321 端口)

打开 http://localhost:6321,在设置中添加服务商和模型即可使用。

代码使用

from nex_agent import NexFramework

nex = NexFramework("./my_project")

# 创建会话并对话
session_id = nex.create_session("测试", "user1")
reply = nex.chat("user1", "你好", session_id=session_id)

# 流式对话
for chunk in nex.chat_stream("user1", "讲个故事", session_id=session_id):
    print(chunk, end="", flush=True)

自定义工具与插件

自定义工具

tools/ 目录创建 Python 文件:

# tools/calculator.py
TOOL_DEF = {
    "name": "calculator",
    "description": "计算器",
    "parameters": {
        "type": "object",
        "properties": {"expression": {"type": "string"}},
        "required": ["expression"]
    }
}

def execute(args):
    return str(eval(args["expression"]))

插件系统

插件可以扩展 NexAgent 功能,访问核心 API,注册自定义路由。

查看完整文档:插件开发示例

API

主要接口:

接口 说明
POST /nex/chat 对话(支持流式)
GET/POST/DELETE /nex/sessions 会话管理
GET/POST/DELETE /nex/models 模型管理
GET/POST/DELETE /nex/providers 服务商管理
GET/POST/DELETE /nex/personas 角色卡管理
GET/POST/DELETE /nex/memories 记忆管理
GET/POST/DELETE /nex/mcp/servers MCP 服务器

License

MIT

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